Question

Jika (ax-3)(x+b) = (p+1)x² + 7x - 6, maka nilai p adalah ....
a. 3
b. 4
c. 5
d. 6

Answer 1

Ax² (-3+ab)x-3b=(p+1)x²+7x-6

-3b=-6
b=2

-3+ab=7
a(2)=10
a=5

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

Answer 2

-3b = -6
b = -6/-3
b = 2
2ax - 3x = 7x
a = 10x/2x = 5
p+1 = 5
p = 5-1 = 4
jawaban : b