F(x) =8x2+x+5 g(x) =7x-1 a.(f+g) (5)

F(x) =8×2+x+5
g(x) =7x-1
a.(f+g) (5)

Jawaban:

$(f + g)(5) =244$

Penjelasan dengan langkah-langkah:

$f(x) = 8 {x}^{2} + x + 5$

$g(x) = 7x - 1$

$(f + g)(5) = ...?$

$(f + g)(x) = 8x {}^{2} + 8x + 4$

$(f + g)(5) =8(5) {}^{2} + 8(5) + 4$

$(f + g)(5) =200 + 40 + 4$

$(f + g)(5) =244$