Abc Formula to Solve a Square Equation

We know that square equation is a times x square plus b times x plus c equals zero. To get the Abc formula we need some step. Step one, we divide all by a, that is x square plus b over a times x plus c over a equals zero. Step two, we need to insert perfect square into that equation. That is x square plus b over a times x plus open bracket b over two of a close bracket square plus c over a equals b over two times a in bracket square. Step three is x plus b over two times a in bracket square equals b square over four times a square in bracket minus c over a equals b square four times a times c all over four times a square. Step four is x plus b over two times a equals about square root of b square four times a times c all over four times a square. Step five is x equals minus b over two times a about one over two times a in bracket times square root of b square four times a times c equals minus b about times square root of b square four times a times c all over two times a. so the formula is:
x equals minus b about times square root of b square four times a times c all over two times a