Question

9x^4 -225y^8

Answer 1

you wanto factor that expression ?

Answer 2

That's as simple as you can get without factoring.

Answer 3

It is a difference of squares. Part of it will be another difference of squares when you get the first one done. Then, maybe another part will be another one!

Answer 4

Yes I want to factor that

Answer 5

Well, then do it. You may wish to start with the coefficients. Looks like some 3s in there.

Answer 6

Sorry if I am delayed still working on other problems

Answer 7

I came up with 25x^4 you can take 9^4 from both sides but it doesn't fit in my answer slot. So apparently I'm doing something wrong...Only been 25 yrs since I've been in school.

Answer 8

25x^2 sorry

Answer 9

1) There is only one side. This is not an equation.
2) There is no 9^4 anywhere.

Hmm...

9x^4 - 225y^8

Just do one thing at a time. No need to do all of it at the same time.

Factor of 3 in each term.

3*(3x^4 - 75y^8)

Another factor of 3 in each term inside the parentheses.

3*3*(x^4 - 25y^8)

We're out of coefficients to play with. Now, can you factor the Difference of Squares inside the parentheses?

Answer 10

Ok so I come up with x-25y^2 and that won't fit in my slot either....__x_+__

Answer 11

i would use difference of 2 squares
a^2-b^2= (a-b)(a +b)
9 = 3^2 x^4 =(x^2)^2 225 = 15^2 y^8 = (y^4)^2
(3x^2)^2 -(15y^4)^2 = (3x^2 - 15y^4)(3x^2 + 15y^4)
you can factor out 3

Answer 12

That makes no sense at all. Please don't try to write pieces of things. Take the time to write the entire expression. It is SO much easier to follow.

Difference of Squares factors like this a^2 - b^2 = (a+b)(a-b)

(5y^4)^2 = 25y^8
(x^2)^2 = x^4

You have 3*3*(x^4 - 25y^8) = 3*3*(x^2 + 5y^4)(x^2 - 5y^4)

You must stare at that until it soaks in.

Answer 13

Factor completely, then place the answer in the proper location on the grid.

9x^4 -225y^8 Grid __x_+________ As you can see my confusion nothing seems to getting me to a point where it fits within my Grid. Unless the answer is something like 9(x^2+25y^4) However to me the exponents could be even further simplified to 9(x+25y^2) but that doesn't fit within my grid. I feel like I'm pedaling but not going anywhere on this question.

Answer 14

You cannot do that to exponents. Not sure what you are doing. I am sure you cannot sight a rule that allow you to do that.

You can factor as a Difference of Squares without first finding the common numeric factors.

9x^4 -225y^8 = (3x^2 - 15y^4)(3x^2 + 15y^4)

No idea at all what to do with that grid.