Question

49(x^2)-64(y^2) is equal to​

Answer 1

hello mate....

given...

$49x {}^{2} - 64y {}^{2}$

we know 》

$x {}^{2} - y {}^{2} = (x + y)(x - y)$

then》

$49x {}^{2} - 64y {}^{2} = > 7 {}^{2} x {}^{2} - 8 {}^{2} y {}^{2} \\ \\ = > (7x) {}^{2} - (8y) {}^{2} \\ \\ = > (7x + 8y)(7x - 8y)$

Hope it helps you...♧♧♧