Question

roots of the function on these two
f(x) = x2 - 4

g(x) = x2 - x - 12

Answer 1

f(x) = x^2 -4 = (x+2)(x-2) = 0
x = 2, -2

g(x) = x^2 -x -12 = (x-4)(x+3) = 0
x = 4, -3