Q. f(x) = x + x² – 2f(4) = ….​

By Posted on

Q. f(x) = x + x² - 2f(4) = ....​

Q. f(x) = x + x² – 2f(4) = ….​

Penjelasan dengan langkah-langkah:

f(x) = x + x {}^{2} – 2

f(4) = 4 + {4}^{2} – 2

f(4) = 4 + ( 4 × 4 ) – 2

f(4) = 4 + 16 – 2

f(4) = 20 – 2

{boxed{red{f(4) = 18 ✅}}}

Gambar Jawaban

Jawaban:

f(x) = x + x² – 2

f(4) = 4 + 4² – 2

f(4) = 4 + (4 × 4) – 2

f(4) = 4 + (4 + 4 + 4 + 4) – 2

f(4) = 4 + (8 + 4 + 4) – 2

f(4) = 4 + (12 + 4) – 2

f(4) = 4 + 16 – 2

f(4) = 20 – 2

f(4) = 18