Impara online a risolvere i problemi di passo dopo passo. 8x^2-22x+21. Applicare la formula: ax^2+bx+c=a\left(x^2+\frac{b}{a}x+\frac{c}{a}\right), dove a=8, b=-22 e c=21. 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=8, b=-\frac{11}{4}x e c=\frac{21}{8}. 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=8, b=-\frac{11}{4}x, c=\frac{21}{8}, x^2+b=x^2-\frac{11}{4}x+\frac{21}{8}+\frac{121}{64}-\frac{121}{64}, f=\frac{121}{64} e g=-\frac{121}{64}. Applicare la formula: \frac{a}{b}c=\frac{ca}{b}, dove a=11, b=8, c=-1, a/b=\frac{11}{8} e ca/b=- \frac{11}{8}.

8x^2-22x+21