The solution of the quadratic equation ax2 bx c 0 is expressed as x -b b2 4ac 2a. Free quadratic equation calculator - Solve quadratic equations using factoring complete the square and the quadratic formula step-by-step. The quadratic formula tells us that if we have a quadratic equation in the form ax squared plus bx plus c is equal to 0 so in standard form then the roots of this are x are equal to negative b plus or minus the square root of b squared minus 4ac all of that over 2a.
Complete the square on the left slide 2ax b2 b2 4ac D.
Substituting in the quadratic formula Since the discriminant b 2 4 ac is 0 the equation has one root. The quadratic formula helps us solve any quadratic equation. We can help you solve an equation of the form ax 2 bx c 0 Just enter the values of a b and c below. X 1 -b b2 4ac2a.