Impara online a risolvere i problemi di completare il quadrato passo dopo passo. 1+19a^2-14a. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=19, b=-14, c=1 e x=a. 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=19, b=-\frac{14}{19}a, c=\frac{1}{19} e x=a. 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=19, b=-\frac{14}{19}a, c=\frac{1}{19}, x^2+b=a^2-\frac{14}{19}a+\frac{1}{19}+\frac{49}{361}-\frac{49}{361}, f=\frac{49}{361}, g=-\frac{49}{361}, x=a e x^2=a^2. Applicare la formula: \frac{a}{b}c=\frac{ca}{b}, dove a=7, b=19, c=-1, a/b=\frac{7}{19} e ca/b=- \frac{7}{19}.

1+19a^2-14a