Question

resultado y fórmula de y=-3x²-6x+9​

Answer 1

Respuesta:

3x (elevado al 2) - 6x + 9=y

9x -6x + 9 = y

3x + 9 =y

3x = 9y

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Explicación paso a paso:

Answer 2

Respuesta y Explicación paso a paso:

-3x² - 6x + 9

a = -3, b = -6,c = 9

x = $\frac{-b+-\sqrt{b^2-4ac}}{2a}$

x = $\frac{-(-6)+-\sqrt{-6^2-4(-3)(9)}}{2(-3)}$

x = $\frac{6+-\sqrt{-6^2-4(-3)(9)}}{2(-3)}$

x = $\frac{6+-\sqrt{36-4(-3)(9)}}{2(-3)}$

x = $\frac{6+-\sqrt{36-(-12)(9)}}{2(-3)}$

x = $\frac{6+-\sqrt{36-(-108)}}{2(-3)}$

x = $\frac{6+-\sqrt{36-(-108)}}{-6}$

x = $\frac{6+-\sqrt{36+108}}{-6}$

x = $\frac{6+-\sqrt{144}}{-6}$

x = $\frac{6+-12}{-6}$

x₁ = $\frac{6+12}{-6}$

x₁ = $\frac{18}{-6}$

x₁ = -3

x₂ = $\frac{6-12}{-6}$

x₂ = $\frac{-6}{-6}$

x₂ = 1