Question

rapidinho pfvvvvvvvvvv

Answer 1

Resposta:

$\frac{3}{2}$

Explicação passo-a-passo:

4x²-12x+9=0

a=4 b=-12 c=9

$x=\frac{-b \: ±\sqrt{b^{2}-4\times a \times c}}{2\times a}$

$x=\frac{-\left(-12\right)±\sqrt{\left(-12\right)^{2}-4\times 4\times 9}}{2\times 4}$

$x=\frac{12±\sqrt{144-144}}{2\times 4}$

$x=\frac{12±\sqrt{0}}{2\times 4}$

$x=\frac{12}{2\times 4}$

$x=\frac{12}{8}$

$x=\frac{3}{2}$

espero ter ajudado