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Verified answer
Jawabx² -3x + 2= 0
(x - 2)(x - 1) =0
x = 2 atau x = 1
s(x) = 3x+ 5
s(2)= 3(2)+ 5 = 11
s(1) = 3(1) + 5= 8
dibagi x +2 sisa = - 4 --> s(-2) = - 4
dibagi (x² + x - 2) = 0 --> s(x) = ax + b
(x + 2)(x -1) =0
x = -2 atau x= 1
s(-2) = -4 --> -2a + b = - 4
s(1) = 8 --> a + b = 8
-2a + b = - 4
a + b = 8 .....(-)
-3a = - 12
a = 4
a + b = 8
4 +b = 8
b = 4
sisa jika dibagi (x² +x -2) adalah 4x + 4