diketahui kesamaan suku banyak p(x+1)+q(x-1)=3x-1 ..,hitunglah p+q

p(x + 1) + q(x - 1) = 3x - 1
px + p + qx - q = 3x - 1
x(p + q) + (p - q) = -1

Lihat kesamaan tempat
(p + q)x = 3x
p + q = 3 ✓

jawab
p(x+1) + q (x-1) = 3x - 1
px + p + qx - q  = 3x -1
(p+q)x + (p-q) = (3) x + (-1)
p+q = 3