Question

Se $A = x^{2} + \frac{1}{5}$, qual valor de A para $x = \frac{2}{5}$

Answer 1

Olá,

A = x² + 1/5
A = (2/5)² + 1/5
A = 4/25 + 1/5
A = 4/25 + 5/25
A = (4+5)/25
A = 9/25

Resposta:

9/25