jabarkan perkalian berikut

Bab Aljabar
Matematika SMP Kelas VIII

1] (4x - 7) (3x + 5) = 12x² + 20x - 21x - 35
                             = 12x² - x - 35

2] (6m + 7) (8 + 5m) = 48m + 30m² + 56 + 35m
                                 = 30m² + 83m + 56

2.(4x-7)(3x+5)
=>(4x . 3x) + (5 . 4x) - (7 . 3x) - (7 . 5)
=>12x² + 20x - 21x - 35
=>12x² - x -35

3.(6m+7)(8+5m)
=>(6m . 8) + (6m . 5m) + (7 . 8) + (7 . 5m)
=>30m²+48m+35m+56
=>30m²+83m+56