Question

Solve x2 + x -20 = 0​

Answer 1

$\huge\underline\mathfrak\purple{Answer}$

x² + x - 20 = 0

x² + 5x - 4x - 20 = 0

x ( x + 5 ) - 4 ( x - 5 ) = 0

( x - 4 ) = 0 and ( x - 5 ) = 0

So,

x = 4 or x = -5

Thanks!

Answer 2

x² + x - 20 = 0

x² + 5x - 4x - 20 = 0

x ( x + 5 ) - 4 ( x - 5 ) = 0

( x - 4 ) = 0 and ( x - 5 ) = 0

x = 4 or x = -5

Thanx