Question

Resolvam a expressão:

Answer 1

a)4*(2x+1)+4x=8x+4+4x=12x+4 
Falso
b)$A_\Delta= \frac{b*h}{2}$
$A_\Delta= \frac{(2x+1)*x}{2}$
$A_\Delta= \frac{2x^2+x}{2}$
Falso
c)$A=b*h$
$A=(4x+2)*2x$
$A=8x^2+4x$
Falso
d)$A= \frac{D*d}{2}$
$A= \frac{(4x+2)*2x}{2}$
$A= \frac{8x^2+4x}{2}$
$A= \frac{8x^2}{2} + \frac{4x}{2}$
$A=4x^2+2x$
Verdadeiro

Gabarito: letra D