(1) shift all terms to the left and merge similar terms: get a form such as: ax 2+bx+c = 0 (a, b and c are coefficients);

(2) x1= (B2-4ac under b+root)/-2a.

X2 = (b B2-4ac under the B-root symbol)/-2a.

When b 2-4ac is equal to 0, the equation has only one solution.

When b 2-4ac is less than 0, the equation has no real number solution.

Very easy to use, try it if you don't believe me!