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x-1=0 , x=1 maka a+b = -3
x + 1=0, x=-1 maka -a+b = 5
lalu eliminasilah a=-4 dan b = 1
maka sisa -4x+1
f(1) = 5
f(x) = (x^2-1)(H(x)) + ax +b
= (x-1)(x+1) (H(x)) + ax + b
f(-1)=(-1-1)(-1+1)(H(x)) + a(-1) + b = -3
= (-2)(0) (H(x)) -a + b = -3
= -a + b = -3
f(1)=(1-1)(1+1)(H(x)) + a(1) +b = 5
= (0)(2)(H(x)) + a + b = 5
= a +b =5
eliminasi
-a+b = -3
a+b = 5
__________-
-2a= -8
a = 4
substitusikan
a+b=5
4+b=5
b= 5 - 4
b = 1
maka sisa pembagian
4x+1
maaf kalau salah....