Impara online a risolvere i problemi di completare il quadrato passo dopo passo. -12z^2+7z+12. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=-12, b=7, c=12 e x=z. 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=-12, b=-\frac{7}{12}z, c=-1 e x=z. 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=-12, b=-\frac{7}{12}z, c=-1, x^2+b=z^2-\frac{7}{12}z-1+\frac{49}{576}-\frac{49}{576}, f=\frac{49}{576}, g=-\frac{49}{576}, x=z e x^2=z^2. Applicare la formula: \frac{a}{b}+c=\frac{a+cb}{b}, dove a/b+c=\left(z- \frac{7}{24}\right)^2-1-\frac{49}{576}, a=-49, b=576, c=-1 e a/b=-\frac{49}{576}.

-12z^2+7z+12