Question

Bikin quis lagi #1


• jika f(2) , maka tentukan .
f(x) = 2x⁴ × 7 - 4x

• jika f(3) , maka tentukan.
f(x) = 9x³ + 9 - 9x

Answer 1

Penjelasan dengan langkah-langkah:

~penyelesaian~

f(2) = 216

f(3) = 225

cara terlampir y

Answer 2

Penyelesaian :

f(x) = 2x⁴ × 7 - 4x

f(2) = 2(2)⁴ × 7 - 4(2)

f(2) = 2(16) × 7 - 4(2)

f(2) = 32 × 7 - 4(2)

f(2) = 32 × 7 - 8

f(2) = 224 - 8

f(2) = 216

---------------------------

f(x) = 9x³ + 9 - 9x

f(3) = 9(3)³ + 9 - 9(3)

f(3) = 9(27) + 9 - 9(3)

f(3) = 243 + 9 - 9(3)

f(3) = 243 + 9 - 27

f(3) = 252 - 27

f(3) = 225