16x^8-72x^4+81

How do I factor this trinomial?
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

16x^8 -72x^4 +81=0

defind y=x^4 & yu hav 16y^2 -72y +81=0

so (y-2.25)(y-2.2y)=0

or y=2.25 (twies)

then x=4th root(2.25)

=1.224744871391589
by

Related questions

1 answer
-6x^5-42x^4-72x^3=0
asked Mar 28, 2013 in Algebra 2 Answers by anonymous | 653 views
1 answer
Factor 16x^2 - 80x + 100 completely
asked May 5, 2014 in Algebra 1 Answers by kidio Level 1 User (140 points) | 1.4k views
1 answer
what are the factors of 2x^3+14x^2+16x-32
asked Apr 4, 2014 in Trigonometry Answers by ashley | 971 views
1 answer
16x^3-8x^2+4x
asked Feb 27, 2014 in Algebra 1 Answers by anonymous | 770 views
1 answer
factor the trinomial x^2-16x+64=
asked Jan 22, 2014 in Algebra 1 Answers by anonymous | 855 views
1 answer
20xy-16x-5y+4
asked Dec 9, 2013 in Algebra 2 Answers by anonymous | 968 views
1 answer
-16x^2+11x+5 simplified
asked Sep 26, 2013 in Trigonometry Answers by anonymous | 771 views
1 answer
how do you factor y^2-16x-36
asked Sep 25, 2013 in Trigonometry Answers by Amber | 1.4k views
1 answer
16x^2 - 1?
asked May 18, 2013 in Algebra 2 Answers by anonymous | 972 views
1 answer
x^2-16x+16
asked May 4, 2013 in Factors of a number by anonymous | 613 views
1 answer
factor completely 16x^2+16y-y^2-64
asked Mar 31, 2013 in Algebra 1 Answers by anonymous | 1.5k views
1 answer
What is 2x^2+16x+32=0
asked Mar 10, 2013 in Algebra 2 Answers by anonymous | 796 views
1 answer
2x^4 - 3x^3 + 16x - 24
asked Feb 22, 2013 in Algebra 2 Answers by anonymous | 951 views
1 answer
x^4-2X^2-16x+32 factor
asked Nov 18, 2012 in Algebra 2 Answers by anonymous | 1.1k views
1 answer
8x3-2x2=16x+4
asked Oct 26, 2012 in Algebra 1 Answers by anonymous | 745 views
1 answer
factorise 16x^(5)+12xy-9y^(5)
asked Oct 13, 2012 in Algebra 2 Answers by anonymous | 1.3k views
1 answer
8x^5+16x^3-8x
asked Aug 20, 2012 in Algebra 2 Answers by anonymous | 970 views
1 answer
Factor 8x^5+16x^3-8x
asked Aug 20, 2012 in Calculus Answers by anonymous | 733 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. Solve 15 -1(12รท4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,281 answers
2,420 comments
733,653 users