Impara online a risolvere i problemi di passo dopo passo. Solve the quadratic equation -3x^2-6x+72=0. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=-3, b=-6 e c=72. Applicare la formula: a\left(x^2+b+c\right)=a\left(x^2+b+c+\left(\frac{coef\left(b\right)}{2}\right)^2-\left(\frac{coef\left(b\right)}{2}\right)^2\right), dove a=-3, b=2x e c=-24. Applicare la formula: a\left(x^2+b+c+f+g\right)=a\left(\left(x+\sqrt{f}sign\left(b\right)\right)^2+c+g\right), dove a=-3, b=2x, c=-24, x^2+b=x^2+2x-24+1-1, f=1 e g=-1. Applicare la formula: a+b=a+b, dove a=-24, b=-1 e a+b=\left(x+1\right)^2-24-1.

Solve the quadratic equation -3x^2-6x+72=0