# Math Help - Help!! hard math questions

1. ## Help!! hard math questions

what's: x^4 + 64 factored
and what's: (5a^2 - 11a +10)^2 - (4a^2 - 15a +6)^2

show work please ^^

2. Originally Posted by ~*chibi-ichigo*~
what's: x^4 + 64 factored
and what's: (5a^2 - 11a +10)^2 - (4a^2 - 15a +6)^2

show work please ^^
$x^4+64=x^4-64i^2$ a difference of two squares $(x^2+8i)(x^2-8i)$

3. Originally Posted by ~*chibi-ichigo*~
[snip]
what's: (5a^2 - 11a +10)^2 - (4a^2 - 15a +6)^2

Mr F says: Two ways to do it. Easy way - Apply the difference of two squares formula. Hard way - expand and simplify.

show work please ^^
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