Bila (ax-3)(x+b) = (p + 1)x kuadrat +7x-6 maka nilai p adalah....

Bab Persamaan Kuadrat
Matematika SMP Kelas VIII

(ax - 3) (x + b) = (p + 1) x² + 7x - 6
ax² + axb - 3x - 3b = (p + 1)x² + 7x - 6
ax² + x (ab - 3) -3b = (p + 1)x² + 7x - h

-3b = - 6
b = 2

ab - 3 = 7
a . 2 = 7 + 3
a = 10/2
a = 5

p + 1 = a
p = 5 - 1
p = 4