Diketahui f(x)=3x^4-2x^3+4x^2-6 dan g(x)=4x^4-x^3-5x^2+3x+15.jika h(x)=f(x)-g(x) nilai h(2) adalah
H(x) = f(x) – g(x)
h(2) = f(2) – g(2)
h(2) = (3(2)^4 – 2(2)³ + 4(2)² – 6) – (4(2)^4 – 2³ – 5(2)² + 3(2) + 15)
h(2) = 3(16) – 2(8) + 4(4) – 6 – 4(16) + 8 + 5(4) – 6 – 15
h(2) = 48 – 16 + 16 – 6 – 64 + 8 + 20 – 21
h(2) = 48 – 70 + 28 – 21
h(2) = 76 – 91
h(2) = – 15
atau
h(x) = f(x) – g(x)
h(x) = (3x^4 – 2x³ + 4x² – 6) – (4x^4 – x³ – 5x² + 3x + 15)
h(x) = – x^4 – x³ + 9x² – 3x – 21
h(2) = – 2^4 – 2³ + 9(2)² – 3(2) – 21
h(2) = – 16 – 8 + 36 – 6 – 21
h(2) = – 24 + 30 – 21
h(2) = 6 – 21
h(2) = – 15