jika f(x) dibagi (x^2-3x+2) sisanya (3x+5) sedangkan jika dibagi (x+2) sisanya -4. jika f(x) dibagi (x^2+x-2) sisanya adalah

jawab

dibagi x^2 -3x + 2 = (x -2)(x -1)
sisa = 3x + 5
s(2) = 3(2)+ 5 = 11
s(1) = 3(1)+ 5= 8
s(-2) = - 4

dibagi  x^2 +x - 2 = (x  +2)(x -1) sisa  s(x) = ax +b
s(-2) = - 4
s(1) = 8 ....(-)
-3a  = -12
a = 4

s(1) = 8
b = 8 - 1a
b = 8 - 4
b = 4

s(x) = 4x + 4