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

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

Solve the quadratic equation 8x^(2)-14x+3=0 (i) When xepsilonI (integers) (ii) When xepsilonQ (rational numbers)

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

Solve for x the quadratic equation x^(2)-4x-8=0 . Give your answer correct to three significant figures.

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

Solve the quadratic equation for x : 4x ^2 −4a ^2x+(a ^4−b ^4)=0

Without solving the quadratic equation 6x^(2)-x-2=0 , find whether x=(2)/(3) is a solution of this equation or not.

Solve the following quadratic equations. x^(2)-3x+2=0

Solve the following quadratic equations. x^(2)+2x-35=0

Solve the following quadratic equations. x^(2)-15x=-26