Question

x^2 - 8x + 15

 

Answer 1

\(=x^2-3x-5x+15=x\left(x-3\right)-5\left(x-3\right)=\left(x-5\right)\left(x-3\right)\)

Answer 2

x² - 8x + 15

= x² - 3x - 5x + 15

= x(x - 3) - 5(x - 3)

= (x - 5)(x - 3)