Complete quadratic equation

Solve the quadratic equation 9x^2-15 x+6=0 by the method of completing the square.

Which constant must be added and subtracted to solve the quadratic equation 9x^2+ 3/4x - sqrt2 = 0 by the method of completing the square?

Solve the quadratic equation 2x^2+ax−a ^2 =0 for x

Solve the quadratic equation. 8x ^2−22x−21=0

Quadratic Equations

Quadratic Equations

Solve the quadratic equation 2x^2-4x+3=0 by using the general expressions for the roots of a quadratic equation.

Solve the quadratic equations by using the general expressions for the roots of a quadratic equation: x^2-(3sqrt(2)-2i)x-6sqrt(2)i=0

If alpha and beta are the roots of the quadratic equation x^(2) + px + q = 0 , then form the quadratic equation whose roots are alpha + (1)/(beta), beta + (1)/(alpha)

If alpha and beta are the roots of a quadratic equation such that alpha+beta=2, alpha^4+beta^4=272 , then the quadratic equation is