Quadratic Formula Calculator Online

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Quadratic formula is the formula used in order to get the solutions of a quadratic equation. When a quadratic

equation is in the general form of ax2 + bx + c = 0, then we can use the quadratic formula to solve for ‘x’.

Quadratic formula online calculator is the instant online tool which can easily give the solution to any

quadratic equation using this formula.



Example 1:Use the quadratic formula and solve for ‘x’ in the equation, x2+ 3x+ 2=0


Given quadratic equation-> x2 + 3x +2 = 0

Since the quadratic equation is in the form of ax2 + bx + c = 0,

Hence -> a= 1, b= 3, c= 2

Quadratic formula-> x = [-b ± √(b2-4ac)]/ 2a

x= [-3±√(9 -8)]/ 2

x = (-3± 1)/2

Hence the solutions are -> x = -1 and x = -2



Example 2:Use the quadratic formula and solve for ‘x’ in the equation, x2- 2x- 15=0


Given quadratic equation-> x2 -2x -15 = 0

Since the quadratic equation is in the form of ax2 + bx + c = 0,

Hence -> a= 1, b= -2, c= -15

Quadratic formula-> x = [-b ± √(b2-4ac)]/ 2a

x= [2 ± √(4 +60)]/ 2

x = (2± 8)/2

Hence the solutions are -> x = 5 and x = -3


 

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