Impara online a risolvere i problemi di passo dopo passo. 2x^2-30x+9. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=2, b=-30 e c=9. 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=2, b=-15x e c=\frac{9}{2}. 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=2, b=-15x, c=\frac{9}{2}, x^2+b=x^2-15x+\frac{9}{2}+\frac{225}{4}-\frac{225}{4}, f=\frac{225}{4} e g=-\frac{225}{4}. Applicare la formula: \frac{a}{b}c=\frac{ca}{b}, dove a=15, b=2, c=-1, a/b=\frac{15}{2} e ca/b=- \frac{15}{2}.

2x^2-30x+9