Question

Tentukan hasil kali dari bentuk aljabar berikut
(nomor 2)

Answer 1

Verified answer

2a) 10 × (2y - 10)
= 10×2y - 10×10
= 20y - 100

2b) (x+5)×(5x-1)
= x(5x-1) + 5(5x-1)
= 5x² - x + 25x - 5
= 5x² + 24x - 5

2c) (7-2x)×(2x-7)
= 7(2x-7) - 2x(2x-7)
= 14x - 49 - 4x² + 14x
= - 4x² + 28x - 49