WyzAnt.comalgebra 1 & it's hard for me so I am seeking the answer. please help!
what is the answer for this 36y4-25y2 ?
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1 Answer
You need to factor this. First factor out a y2.
Notice:
36y2= (6y)2
25 = 52
The factorization of a2-b2 is always (a-b)(a+b). This is called the difference of two squares.
So by the difference of two squares the factorization is y2(6y-5)(6y+5).
If by chance this is 36y4-25y2=0, then we'd need to take it one step further. With our factorization we set y2=0 to get y=0, 6y-5 =0 gives y = 5/6, and 6y+5 =0 gives y = -5/6.
Hope this helps!
-Devin
Comments
thank you helped lots :)
- Dedrea D. from Rodeo, CA 1/30/2013You're very welcome. Glad I could help.
- Devin S. 1/30/2013
Comments
I need more explanation of what you are doing with the expression. For example, does this equal something or does it need factored?
- John R. 1/30/2013does not equal anything.
- Dedrea D. from Rodeo, CA 1/30/2013Are you supposed to factor it?
- John R. 1/30/2013gets factored!
- Dedrea D. from Rodeo, CA 1/30/2013