Impara online a risolvere i problemi di passo dopo passo. 9x^2+42x+25. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=9, b=42 e c=25. 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=9, b=\frac{14}{3}x e c=\frac{25}{9}. 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=9, b=\frac{14}{3}x, c=\frac{25}{9}, x^2+b=x^2+\frac{14}{3}x+\frac{25}{9}+\frac{49}{9}-\frac{49}{9}, f=\frac{49}{9} e g=-\frac{49}{9}. Applicare la formula: \frac{a}{b}+\frac{c}{b}=\frac{a+c}{b}, dove a=25, b=9 e c=-49.

9x^2+42x+25