Factor: 9-9b^4

All I know is that the GCF is 9.. how do I go about solving this?

Question

Factor: 9-9b^4

All I know is that the GCF is 9.. how do I go about solving this?

anonymous · Answer

You take the CGF out of the parentheses like that 9* (First - Second)

anonymous · Answer

What will be the First now ?

anonymous · Answer

1

anonymous · Answer

Second will be - b^2

anonymous · Answer

So that would make it 1-b^4?

anonymous · Answer

Sorry YES

anonymous · Answer

9(1-b^4) what would the formula be to factor this?  I am not sure what it is past the difference of cubes.

anonymous · Answer

NOO cubes - just humble squares

anonymous · Answer

A^2  - B^2 = ( A + B     )(A  -   B       )

anonymous · Answer

So it would be 9(1+b^2)(1-b^2)?

anonymous · Answer

YeeeAs , btw ? be my Fan , may be ?

anonymous · Answer

Hm, that is the problem though, that is not the answer that is in the back of the book, I know of the answer, I am just trying to see how they go there.. they have 9(1+b^2)(1+b)(1-b) Hmm..

anonymous · Answer

I wonder why the factored the last part but not the first...

anonymous · Answer

Well they are both the same (be my fan) just continue splitting

anonymous · Answer

Ah, alrighty, thank you. I appreciate your help!

anonymous · Answer

And send ME more challenges aand more challenging ones

anonymous · Answer

Close this question please