Question

Faktorkan bentuk:
a. x² + 8x -20

b. 3x² - 12y²

Answer 1

X² + 8x - 20
= x² + 10x - 2x - 20
= x(x + 10) - 2(x + 10)
= (x - 2)(x + 10)

3x² - 12y²
= 3(x² - 4y²)
= 3(x + 2y)(x - 2y)

Answer 2

A) x²+8x-20 = (x-2).(x+10)

b) 3x²-12y²
= 3.(x²-4y²)
= 3.(x+2y).(x-2y)