The standard form is ax² bx c 0 with a b and c being constants or numerical coefficients and x is an unknown variable. Examples are shown of how to complete the square to factorise any expression and to solve equations. Then the two factors of -15 are.
Divide each term by 4 to get.
4x 2 12x 9 25 0 4x 2 12x 16 0. You can SSC solutions for maths Quadratic equations class 10. Then the two factors of -15 are. 4x 2 12x 9 25 0 4x 2 12x 16 0.