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rumus dasar f(x) = qx + r
f(2) => 2q + r= -7
f(-5)=>-5q +r = 7 _
7q = -14
q = -14/7
q = -2
ambil salah satu ruas
f(2)=> 2q + r =-7
2(-2)+r= -7
-4 + r = -7
r = -7 + 4
r = -3
hasil rumus
g(x) = qx + r
= -2x -3
g(4)= -2(4) -3
= -8-3
= -11
jawabn D).-11
nomer 18.
atau
jawaban C