Question

factoruze: x^2-30x+225

Answer 1

x sq -30x+225=0
x sq -15x-15x+225=0
x (x-15)-15 (x-15)=0
(x-15)(x-15)=0
Iex=15 ans

Answer 2

x^2-30x+225. 225 = 15×15
= x^2-15x-15x+225
=x(x-15) - 15(x-15)
= (x-15) (x-15)
x = 15