f(x)=x^3-81x/(2x=1)^2

find the zeros of the function by factoring or algebraically
in Trigonometry 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

Do you mean f(x)=(x3-81x)/(2x-1)2? If so:

then we can write f(x)=x(x2-81)/(2x-1)2=x(x-9)(x+9)/(2x-1)2, which can only be zero if the numerator is zero.

so x(x-9)(x+9)=0, making the zeroes x=0, 9 or -9.

by Top Rated User (1.1m points)

Related questions

1 answer
f(x)=x^2+10 and g(x)=2x-14 find f(g(-3))
asked Feb 27, 2013 in Trigonometry Answers by anonymous | 602 views
1 answer
If f(x)=2x-5 and g(x)=x^2. Find the value of f(g(-2)?
asked Jan 5, 2012 in Trigonometry Answers by anonymous | 633 views
2 answers
let f(×)=√×. is f(3+1)=f(3)+f(1)?
asked Jun 14, 2014 in Trigonometry Answers by anonymous | 791 views
1 answer
let f(×) = 2× + 1. is f(3+1) + f1)?
asked Jun 14, 2014 in Trigonometry Answers by anonymous | 622 views
1 answer
f(x)= 1/x , x<0 table
asked Jul 9, 2013 in Trigonometry Answers by anonymous | 696 views
2 answers
state domain if (f-g)(x) f(x)=2x-7; g(x)=5x+2
asked Aug 24, 2015 in Algebra 1 Answers by anonymous | 894 views
1 answer
finding f(x^2)=x^2-2x+3
asked Jun 10, 2014 in order of operations by ANGELYN | 609 views
1 answer
f(x)=-3x^2+2x-4 and g(x)=x^3+3x^2 find (f+g)(x)
asked Jul 2, 2013 in Algebra 1 Answers by anonymous | 842 views
1 answer
if f(x)=2x+3 and g(x)=x-1
asked Jun 19, 2013 in Algebra 1 Answers by anonymous | 615 views
1 answer
domain of f(x)=2x-1/x^2+x-6
asked Apr 21, 2013 in Algebra 2 Answers by anonymous | 620 views
1 answer
Find f(x) if f'(x) = 2x
asked Apr 4, 2013 in Calculus Answers by anonymous | 760 views
1 answer
Let f(x) = -2x - 7 and g(x) = -4x + 3. Find (f °g) (-5)
asked Mar 15, 2013 in Algebra 2 Answers by anonymous | 3.3k views
1 answer
f(x)=-3x^(2)-2x-1
asked Mar 2, 2013 in Algebra 1 Answers by anonymous | 584 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

87,540 questions
99,812 answers
2,417 comments
523,760 users