Quadratic Formula

x=1 or x=-2.5

Solve 2x²+3x-5=0 using the Quadratic Formula.

no real solutions

Solve 2x²-3x+2=0 using the Quadratic Formula.

x=4.19 or x = -1.19

Solve x²-3x-5=0 using the Quadratic Formula.

x=1.11 or x = -1.11

Solve 4x²-5=0 using the Quadratic Formula.

x = .68 or x = -3.69

Solve 2x²+6x-5=0 using the Quadratic Formula.

x = 3.64 or x = -0.14

Solve 2x²-7x-1=0 using the Quadratic Formula.

x = -1.5 or x = -1

Solve 2x²+5x+3=0 using the Quadratic Formula.

x = -6 or x = 2.8

Solve 5x²+16x-84=0 using the Quadratic Formula.

x = -2/3

Solve 9x²+12x+4=0 using the Quadratic Formula.

x = 1.5

Solve 4x²-12x+9 =0 using the Quadratic Formula.

then there is no solution.

When under the square root is negative...

then there is one solution.

When under the square root is zero...

Quadratic Formula

Standard Form of Quadratic Equations

Discriminant

the part of the quadratic equation which is located inside of the square root=

b squared - 4ac

Quadratic Formula Method

plug in a, b, and c into the quadratic formula and solve