Question

fatore :
a) x²-10x+25
b) x² - 2xy + y² - z²

Answer 1

x² + 10x + 25=
x² + 2.5x + 5²=
(x+5)²

4x² -16x +16=
4(x² -4x +4)
4(x-2)²

(100 - x²) (100 + x²)=
(100² - x^4)

Answer 2

a)
x² - 10x + 25
(x - 5)²

b)
x² - 2xy + y² - z²
(x - y)² - z²