How to find x intercepts of a quadratic function in standard form

To find the x intercepts of a quadratic function, means to find those values of x for which y equals zero, graphically, it implies to find the values that pass through the x axis.There is a standar formula to apply whenever you have to find those vaues. Consider you have the following quadratic function: , where "a" is the coefficient of the quadratic term, "b" is the coefficient of the linear term in your equation, and "c" is the y intercept (the value of y when x equals zero). Then the x intercepts can be obtained applying the following formula: . Remember that the letters a, b and c are the coefficients in your equation.You always obtain two intercepts, because of the (+-) in the formula: and .If the equation is , then a=3, b= -4 and c= -2.