diketahui m(x) = 2x^3 - 5x^2 - 4 dan n(x) = x^4 - 3x^2 +6 . Jika p(x) = m(x) + n(x) , nilai p(-2) =
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Pertanyaan
diketahui m(x) = 2x^3 - 5x^2 - 4 dan n(x) = x^4 - 3x^2 +6 . Jika p(x) = m(x) + n(x) , nilai p(-2) =
1 Jawaban
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1. Jawaban EvaTS1
p(x) = m(x) + n(x)
p(x) = (2x^3 - 5x^2 - 4) + (x^4 - 3x^2 + 6)
p(x) = x^4 + 2x^3 - 5x^2 - 3x^2 - 4 + 6
p(x) = x^4 + 2x^3 - 8x^2 + 2
p(-2) = (-2)^4 + 2(-2)^3 - 8(-2)^2 + 2
p(-2) = 16 + 2(-8) - 8(4) + 2
p(-2) = 16 + (-16) - 32 + 2
p(-2) = -30