Jika suku banyak f(x) dibagi x2 - x sisa pembagiannya 3x + 4 dan jika dibagi x2 + x - 6 sisa pembagiannya 2x + 5. Sisa pembagian jika f(x) dibagi x2 + 2x - 3...

f(x) : (x^2 - x) bersisa (3x + 4)
x^2 - x = x(x - 1) => x = 0 atau x = 1
f(0) = 3(0) + 4 = 4
f(1) = 3(1) + 4 = 7

f(x) : (x^2 + x - 6) bersisa (2x + 5)
x^2 + x - 6 = (x + 3)(x - 2) => x = -3 atau x = 2
f(-3) = 2(-3) + 5 = -1
f(2) = 2(2) + 5 = 9

f(x) : x^2 + 2x - 3 bersisa (ax + b)
x^2 + 2x - 3 = (x + 3)(x - 1) => x = -3 atau x = 1
f(-3) = a(-3) + b => -3a + b = -1
f(1) = a(1) + b ======> a + b = 7
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....................................... -4a = -8 => a = 2
a + b = 7 => 2 + b = 7 => b = 5
Sisa = ax + b = 2x + 5