This is coming from Algebra 1 Unit 9 Factoring Polynomials Solving Quadratic Equations by Factoring. The section that it is coming from is Factoring Trinomials by Trial and Error. The problem is 3x squared + 11x + 10. Please help me.
in Algebra 1 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

3x^2 + 11x + 10

first ask what multiplies to make 3x^2   (3x    )(x     )

then what multiplies to make 10 (2 and 5) the question is where to put each number (this is where trial and error comes in

if you start with (3x + 2)(x + 5) and FOIL you get 3x^2 + 15x + 2x + 10....notice that 15x + 2x = 17x not the 11x that you need

so try again, but switch the 2 and 5 (3x + 5)(x + 2) then 3x^2 + 6x + 5x + 10...notice that 6x + 5x = 11x

so answer is (3x + 5)(x + 2)
by Level 5 User (11.9k points)

Related questions

1 answer
1 answer
asked May 5, 2014 in Other Math Topics by anonymous | 545 views
1 answer
asked Jan 24, 2012 in Algebra 1 Answers by anonymous | 655 views
0 answers
asked Jan 24, 2012 in Algebra 1 Answers by thawes59 Level 1 User (400 points) | 594 views
1 answer
asked Jan 24, 2012 in Algebra 1 Answers by thawes59 Level 1 User (400 points) | 506 views
2 answers
asked Apr 19, 2011 in Algebra 1 Answers by anonymous | 2.9k views
1 answer
asked Apr 6, 2011 in Algebra 1 Answers by anonymous | 1.4k views
1 answer
asked Sep 5, 2014 in Other Math Topics by nrmorgan Level 1 User (120 points) | 2.0k views
1 answer
1 answer
1 answer
1 answer
asked Feb 24, 2012 in Algebra 2 Answers by anonymous | 501 views
1 answer
1 answer
asked Aug 7, 2012 in Algebra 1 Answers by anonymous | 1.2k views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular tags

algebra problems solving equations word problems calculating percentages math problem geometry problems calculus problems math fraction problems trigonometry problems rounding numbers simplifying expressions solve for x order of operations probability algebra pre algebra problems word problem evaluate the expression slope intercept form statistics problems factoring polynomials solving inequalities 6th grade math how to find y intercept equation of a line sequences and series algebra 2 problems logarithmic equations solving systems of equations by substitution dividing fractions greatest common factor square roots geometric shapes graphing linear equations long division solving systems of equations least to greatest dividing decimals substitution method proving trigonometric identities least common multiple factoring polynomials ratio and proportion trig identity precalculus problems standard form of an equation solving equations with fractions http: mathhomeworkanswers.org ask# function of x calculus slope of a line through 2 points algebraic expressions solving equations with variables on both sides college algebra domain of a function solving systems of equations by elimination differential equation algebra word problems distributive property solving quadratic equations perimeter of a rectangle trinomial factoring factors of a number fraction word problems slope of a line limit of a function greater than or less than geometry division fractions how to find x intercept differentiation exponents 8th grade math simplifying fractions geometry 10th grade equivalent fractions inverse function area of a triangle elimination method story problems standard deviation integral ratios simplify systems of equations containing three variables width of a rectangle percentages area of a circle circumference of a circle place value solving triangles parallel lines mathematical proofs solving linear equations 5th grade math mixed numbers to improper fractions scientific notation problems quadratic functions number of sides of a polygon length of a rectangle statistics zeros of a function prime factorization percents algebra 1 evaluating functions derivative of a function equation area of a rectangle lowest common denominator solving systems of equations by graphing integers algebra 2 diameter of a circle dividing polynomials vertex of a parabola calculus problem perpendicular lines combining like terms complex numbers geometry word problems converting fractions to decimals finding the nth term range of a function 4th grade math greatest to least ordered pairs functions radius of a circle least common denominator slope unit conversion solve for y calculators solving radical equations calculate distance between two points area word problems equation of a tangent line multiplying fractions chemistry binomial expansion place values absolute value round to the nearest tenth common denominator sets set builder notation please help me to answer this step by step significant figures simplifying radicals arithmetic sequences median age problem trigonometry graphing derivatives number patterns adding fractions radicals midpoint of a line roots of polynomials product of two consecutive numbers limits decimals compound interest please help pre-algebra problems divisibility rules graphing functions subtracting fractions angles numbers discrete mathematics volume of a cylinder simultaneous equations integration probability of an event comparing decimals factor by grouping vectors percentage expanded forms rational irrational numbers improper fractions to mixed numbers algebra1 matrices logarithms how to complete the square mean statistics problem analytic geometry geometry problem rounding decimals 5th grade math problems solving equations with variables solving quadratic equations by completing the square simplifying trigonometric equation using identities
87,439 questions
99,037 answers
2,421 comments
16,934 users