Question

Dada a funçao f(x)= 5x²+6, Determine:

a) f(6/5)

Answer 1

f(x)= 5x²+6

a) f(6/5)

f(6/5)= 5(6/5)²+6
f(6/5)= 5(36/25)+6
f(6/5)= 180/25+6
f(6/5)= 7,2 + 6
f(6/5)= 13,2

Answer 2

Olá Mateus

$f(x) = 5x^2 + 6$
$f (\frac{6}{5}) = 5 (\frac{6}{5})^2 + 6$
$f(\frac{6}{5}) = 5\frac{36}{25} + 6$
$f(\frac{6}{5}) = \frac{5 x 36}{25} + 6$
$f (\frac{6}{5}) = \frac{180}{25} + 6$
$f(\frac{6}{5}) = 180 + 150 = 330$
$f( \frac{6}{5}) = 330:10 = 33$

Bons estudos!