Solving Quadratics Practice

zero product theroy

If a times b equals zero, then either a or b has to be zero

x = 1 x = -3

Solve by factoring: x^2 + 2x - 3 = 0

x = -5 x = -4

Solve by factoring: x^2 + 9x + 20 = 0

x = 5 x = 8

Solve by factoring: x^2 - 13x + 40 = 0

x = 2 x = 0

Solve by factoring: x^2 - 2x = 0

x = 2 x = 4

Solve by factoring: x^2 - 6x + 8 = 0

x = 3 x = 6

Solve by factoring: x^2 - 9x + 18 = 0

x = -0.5 x=-4

Solve using the quadratic formula: 2x^2 + 9x + 4 = 0

x = 3 x = -6

Solve using the quadratic formula: 3x^2 + 9x-54 = 0

x = 3.5 x = -4.33

Solve using the quadratic formula: 6x^2 + 5x - 91 = 0

x = 5 x = -8

Solve using the quadratic formula: x^2 + 3x - 40 =0

x = 7 x = -7

Solve using the quadratic formula: x^2 - 49 = 0

x = 15 x = -6

Solve using the quadratic formula: x^2 - 9x - 90 = 0

Quadratic equation

ax^2 + bx + c

Quadratic Formula

opposite of b plus or minus the square root of b squared minus four times a times c all divided by 2 times a