Question

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

Answer 1

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