Question

solve for x in the quadratic equation x^2+x-90=0

Answer 1

Answer : by using factoring method

X२ + 10x - 9x - 90 = 0

x ( x + 10 ) -9 ( x - 10 ) = 0

(x + 10 ) ( x - 9 ) = 0

Or x + 10 = 0
X = -10

Or x - 9 = 0
x = 9

Roots of equation is -10 or 9