Question

Sederhanakan persamaan berikut 1. (9x^2-8x-6)×(-1/3) =

2. 4(3x-4y+1)+3(x+2y) =

Answer 1

Verified answer

Mapel : Matematika
Kelas : VIII SMP
Bab : SPLDV

Pembahasan :
(9x² - 8x - 6)(-1/3)
= (9x²)(-1/3) - (8x)(-1/3) - (6)(-1/3)
= -3x² + (8x/3) + 2

————————————————
4(3x - 4y + 1) + 3(x + 2y)
= 4(3x) - 4(4y) + 4(1) + 3(x) + 3(2y)
= 12x - 16y + 4 + 3x + 6y
= (12 + 3)x + (-16 + 6)y + 4
= 15x - 10y + 4