Impara online a risolvere i problemi di passo dopo passo. -5x^2-2x+40. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=-5, b=-2 e c=40. 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=-5, b=\frac{2}{5}x e c=-8. 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=-5, b=\frac{2}{5}x, c=-8, x^2+b=x^2+\frac{2}{5}x-8+\frac{1}{25}-\frac{1}{25}, f=\frac{1}{25} e g=-\frac{1}{25}. Applicare la formula: \frac{a}{b}+c=\frac{a+cb}{b}, dove a/b+c=\left(x+\frac{1}{5}\right)^2-8-\frac{1}{25}, a=-1, b=25, c=-8 e a/b=-\frac{1}{25}.

-5x^2-2x+40