Question

Factor completely.
9x^4 -225y^8

Answer 1

Use
a^2 - b^2 = (a+b)(a-b) [IDENTITY]
So we can write your expression as
(3x)^2 - (15y4)^2
Now use the identity and tell me what you think the answer would be! :D

Answer 2

What do you think?? :)

Answer 3

Haha I have no idea!!

Answer 4

CHILL :')
The answer should be?
(3x-15y^4)(3x+15y^4)
Go through the Identity once more! :)
Understood? :)

Answer 5

sorry no.. not understood!:( im taking an expensive online class of algebra II lol.. and this is one of the questions on my alternate test.. ive been doing this for hours! gotta get caught up some how i guess! haha

Answer 6

http://www.tutorsonnet.com/math_homework_help/number_theory/online_algebraic_identities_assignment_help_tutoring.htm