x2 - 1 = 0
{-1, 1}
Solve the following quadratic equation by factoring:
x2 - 4 = 0
{-2, 2}
Solve the following quadratic equation by completing the square: x2 + 6x = -8
{-4, -2}
What is the quadratic formula?
x = -b +- sqrt(b2 - 4ac) /(2a)
What are three ways you can solve for the x-intercepts?
Completing the Square
Factoring
Quadratic Formula
Graphing
Taking the Square Root
Solve the following quadratic equation by factoring.
x2 - 6x + 5 = 0
{1, 5}
Solve the following quadratic equation by factoring:
9x2 - 81x = 0
{0, 9}
Solve the following quadratic equation by completing the square: x2 - 6x = -5
{1, 5}
Solve the following quadratic equation by using the quadratic formula: x2 + 6x + 5 = 0
x = -1, x = -5
What is the discriminant?
b2-4ac
Solve the following quadratic equation by factoring.
n2 - 7n + 6=0
{6, 1}
Solve the following quadratic equation by factoring:
(k - 3)(5k + 1) = 0
{3, -1/5}
Solve the following quadratic equation by completing the square: x2 - 2x = 24
{-4, 6}
Solve the following quadratic equation by using the quadratic formula: x2 - 9x + 6 = 0
(9 +- sqrt57)/2
Name three topics on this week's test.
Solving quadratics by completing the square, solving quadratics by graphing, factoring quadratics, solving quadratics using the quadratic formula
Solve the following quadratic equation by factoring.
b2 - 8b = 20
{10, -2}
Solve the following quadratic equation by factoring:
5n2 + 41n - 12 = -4 + 2n
{1/5, -8}
Solve the following quadratic equation by completing the square: x2 + 10x +5 = 0
-5 +- 2(sqrt5)
Solve the following quadratic equation by using the quadratic formula: 2x2 + 9x + 4 = 0
{-1/2, -4}
What is the standard form of a quadratic equation?
ax2 + bx + c = 0
Solve the following quadratic equation by factoring.
9x2 + 5x - 24= 8x2 + -5x
{-12, 2}
Solve the following quadratic equation by factoring:
-2m2 - 60m +72 = -8m2 - 3m
{3/2, 8}
Solve the following quadratic equation by completing the square:
x2 - 8x + 13 = 0
4 +-sqrt 3
Solve the following quadratic equation by using the quadratic formula:
4x2 - 17x =-12
(17 +- sqrt97)/2
Simplify:
sqrt(-4)
+- 2i