Question

X square + 2 x minus 63
$x ^{2} + 2x - 63$

Answer 1

Hey bro!

ur solution here:

$= > {x}^{2} + 2x - 63 \\ \\ = > {x}^{2} + 9x - 7x - 63 = 0 \\ \\ = > x(x + 9) - 7(x + 9) = 0 \\ \\ = > (x + 9)(x - 7) \: ans$
☺☺

Answer 2

Let F(X)=x²+2x-63 = 0
x²+2x=63

F(7)=7²+2(7)=63
        =49+14=63