Question

can someone help me with this?

Answer 1

http://prntscr.com/dh6piv

Answer 2

Is the answer \[(3x^{2}+8y)(3x ^{2}-8y)\] ?

Answer 3

yes, you can multiply all that back out to check for the same problem, but the idea is the property for difference of two squares

(x + y)*(x - y) = x^2 - y^2

Answer 4

you see both terms in the problem are squares,
\[\large 9x^4 = [3x^2]^2\]
\[\large 64y^2=[8y]^2\]

Answer 5

omg ty :)

Answer 6

welcome