x^(2)+x-20=0

Find the roots of the quadratic equation 9x^(2)-3x-20=0 by formula method.

Find the roots of the equations. Q. 6x^(2)+7x-20=0 .

Solve the given quadratic equation by factorization method: 7x^2+4x-20=0

10x^(2)-20x+1=0

Number of values of x satisfying the pair of quadratic equations x^(2)-p x+20=0 and x^(2)-20 x+p=0 for some p in R , is

(i) x^(2)+9x+20=0 (ii) y^(2)+7y+12=0