Question

Tentukan hasil perkalian dari :
a. 5x² (6x-3y)
b. (2x-2)(x+5)
c. (x-5)(x²-4x + 20)

Answer 1

A. 30xkubik - 15kuadraty
b. 2xkuadrat + 10x -10
c. xkubik-4xkuadrat - 20x -5xkuadrat -20x - 100
= xkubim-9xkuadrat-40x-100

Answer 2

a) 5x² (6x-3y)
= 30x³ - 15 x²y
b) (2x-2) (x+5)
= 2x² +10x -2x -10
= 2x² + 8x -10
c) (x-5)(x²-4x+20)
= x³ -4x²+20x-5x²+20x-100
=x³ - 9x² + 40x -100