2. Diketahui polinomial f(x) = 2×4 + 4×2 + x + 1. Nilai f(2) – 2f(0) = . . . .
1. Jika (x – 1) merupakan faktor linear dari persamaan polinomial 4×4 – 15×2 + 5x + n = 0, nilai x1x2x3x4 = . . . .
Jawaban Terkonfirmasi
1.
x = 1, maka
4(1)^4 – 15(1)² + 5(1) + n = 0
4 – 15 + 5 + n = 0
n = 6
4x^4 – 15x² + 5x + 6 = 0
ax^4 + bx³ + cx² + dx + e = 0
x1x2x3x4 = e/a = 6/4 = 3/2
2.
f(2) = 32 + 16 + 3 = 51
f(0) = 1
51 – 2(1) = 51 – 2 = 49
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