Question

Se A = x² +1/5, o valor de A, quando x = 2/5, é:
4 pontos
1
9/25
6/25
9/5

Answer 1

Oie, tudo bom?

Resposta: 9/25.

$A = x {}^{2} + \frac{1}{5}$

$A = ( \frac{2}{5} ) {}^{2} + \frac{1}{5}$

$A = \frac{2 {}^{2} }{5 {}^{2} } + \frac{1}{5}$

$A = \frac{4}{25} + \frac{1}{5}$

$A = \frac{4 + 5}{25}$

$\boxed{ A = \frac{9}{25} }$

Att. NBA YoungBoy