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Untuk nomor 9 hanya kita tambahkan saja semua nilainyax^3+4x^2-3x+4+x^4+5x-7+2x^3
=x^4+3x^3+4x^2=2x-3
untuk nomor 10 sama halnya dengan nomor 9
x^3+4x^2-3x+4+ 4(2x^3)
=x^3+4x^2-3x+4+8x^3
=9x^3+4x^2-3x+4
Bab Operasi Fungsi
f(x) = x³ + 4x² - 3x + 4
g(x) = x⁴ + 5x - 7
h(x) = 2x³
9. f(x) + g(x) + h(x)
= x³ + 4x² - 3x + 4 + (x⁴ + 5x - 7) + (2x³)
= x⁴ + 3x³ + 4x² + 2x - 3
10. f(x) + 4h(x)
= x³ + 4x² - 3x + 4 + 4(2x³)
= x³ + 4x² - 3x + 4 + 8x³
= 9x³ + 4x² - 3x + 4