Impara online a risolvere i problemi di passo dopo passo. Solve the quadratic equation v^2+20v=-7. Applicare la formula: x^2+bx=x^2+bx+\left(\frac{b}{2}\right)^2-\left(\frac{b}{2}\right)^2, dove b=20, bx=20v, x=v, x^2+bx=v^2+20v e x^2=v^2. Applicare la formula: x^2+bx+f+g=\left(x+\sqrt{f}sign\left(b\right)\right)^2+g, dove b=20, bx=20v, f=100, g=-100, x=v, x^2+bx=v^2+20v+100-100 e x^2=v^2. Applicare la formula: x+a=b\to x+a-a=b-a, dove a=-100, b=-7, x+a=b=\left(v+10\right)^2-100=-7, x=\left(v+10\right)^2 e x+a=\left(v+10\right)^2-100. Applicare la formula: x+a+c=b+f\to x=b-a, dove a=-100, b=-7, c=100, f=100 e x=\left(v+10\right)^2.

Solve the quadratic equation v^2+20v=-7