Impara online a risolvere i problemi di passo dopo passo. 9y^2-10y+121. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=9, b=-10, c=121 e x=y. 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{10}{9}y, c=\frac{121}{9} e x=y. 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{10}{9}y, c=\frac{121}{9}, x^2+b=y^2-\frac{10}{9}y+\frac{121}{9}+\frac{25}{81}-\frac{25}{81}, f=\frac{25}{81}, g=-\frac{25}{81}, x=y e x^2=y^2. Applicare la formula: \frac{a}{b}c=\frac{ca}{b}, dove a=5, b=9, c=-1, a/b=\frac{5}{9} e ca/b=- \frac{5}{9}.

9y^2-10y+121