how to extract the square roots

how to extract 2x²=20

and 4x²-100=0
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

1)

2x^2 = 20
x^2 = 20 / 2
x^2 = 10
x = +/-sqrt(10)
x= sqrt(10) or x = -sqrt(10)

2)

4x^2 - 100 = 0
4x^2 = 100
x^2 = 100 / 4
x^2 = 25
x = +/-sqrt(25)
x = 5 or x = -5
by

Related questions

1 answer
square root of 40
asked Jul 2, 2014 in Algebra 2 Answers by ryder | 882 views
1 answer
use the square root property to solve the equation
asked Apr 17, 2013 in Algebra 1 Answers by anonymous | 684 views
1 answer
What is the Square root of 112
asked Mar 1, 2013 in Algebra 1 Answers by Stevie quinter Level 1 User (120 points) | 704 views
1 answer
solve using the square root property
asked Dec 18, 2012 in Algebra 2 Answers by anonymous | 839 views
1 answer
3 divide by the square root of 8
asked Aug 8, 2012 in Algebra 1 Answers by anonymous | 863 views
1 answer
use the square root property (x-5)^2=4
asked Feb 27, 2012 in Algebra 1 Answers by anonymous | 942 views
1 answer
how to solve( x-1)^2 +12=0 using square root property
asked Feb 9, 2012 in Algebra 2 Answers by anonymous | 1.2k views
1 answer
2z^2-50=0,square root property
asked Dec 12, 2011 in Algebra 1 Answers by anonymous | 998 views
1 answer
patterns in suares and square roots
asked May 16, 2013 in Word Problem Answers by anonymous | 579 views
1 answer
multiplying non perfect square roots
asked Apr 15, 2013 in Algebra 1 Answers by anonymous | 670 views
1 answer
square roots 6,300,000 m2 n2 x6 y3 z
asked Mar 29, 2013 in Pre-Algebra Answers by anonymous | 668 views
1 answer
How do you calculate negative square roots
asked Oct 15, 2012 in Statistics Answers by anonymous | 937 views
1 answer
How do you calculate negative square roots
asked Oct 15, 2012 in Statistics Answers by anonymous | 678 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 questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. complete the following. 825 use each digit once .make the two smallest 3 digit numbers and two largest 3-digit number (2)
  4. Solve 15 -1(12÷4+1)? (4)
  5. 8:4(5+2) (3)

Most popular tags

87,544 questions
99,732 answers
2,417 comments
483,034 users