Question

Se A=x elevado a 2 + 1/5 qual e o valor de A quando x= 2/3:
A)29/45
B)3/5
C)4/15
D)3/2

Answer 1

$A=x^{2}+ \frac{1}{5}\\ A=( \frac{2}{3})^2+ \frac{1}{5} \\ A= \frac{4}{9}+ \frac{1}{5} = // mmc(9,5)=45\\ A= \frac{20+9}{45} \\ A= \frac{29}{45}$