Question

X²—x—81 find out roots of the following

Answer 1

x^2 - x - 81
x^2 - 9x + 9x - 81
x(x - 9) +9(x - 9)
(x - 9) (x + 9)
x - 9= 0 or x + 9 =0
x = 9 or x = -9

Answer 2

Here is your answer

here a =1 ,b = -1. and c = -81

Hope it helps you