Question

HI I'm simply supposed to factor this problem:
9x^2 + 7xy - 2y^2

Answer 1

I can't remember how to do it

Answer 2

\[9x^{2} + 7xy - 2y^{2}\]
\[(ax + by)(cx - dy) = (ac)x^{2} - (ad)xy + (bc)xy - (bd) y^{2}\]

Answer 3

you just have to grind it until you find it.
(3x-2y)(3x+y)
nope
(3x-y)(3x+2y)
nope
try (9x-2y)(x+y)

Answer 4

groovy
9x^2 - 2xy +9xy -2y^2