Question

seja f(x)=2x²-3x+4 a imagem de -2/3 e?


me ajude pfvrr​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\mathsf{f(x) = 2x^2 - 3x + 4}$

$\mathsf{f\left(-\dfrac{2}{3}\right) = 2\left(-\dfrac{2}{3}\right)^2 - 3\left(-\dfrac{2}{3}\right) + 4}$

$\mathsf{f\left(-\dfrac{2}{3}\right) = 2\left(\dfrac{4}{9}\right) - 3\left(-\dfrac{2}{3}\right) + 4}$

$\mathsf{f\left(-\dfrac{2}{3}\right) = \left(\dfrac{8}{9}\right) + \left(\dfrac{6}{3}\right) + 4}$

$\mathsf{f\left(-\dfrac{2}{3}\right) = \dfrac{3(8) + 9(6) + 27(4)}{27}}$

$\mathsf{f\left(-\dfrac{2}{3}\right) = \dfrac{62}{9}}$