Question

factorise the equation x sq -16

Answer 1

x^2-16
(x)^2- (4)^2
(x-4)(x+4)

Answer 2

X^2-16=0
X^2-(4)^2=0
(X+4)(X-4)=0
X+4=0. X-4=0
X=-4. X=4...