Factoring
Solve the following quadratic equation by factoring.
x2 - 1 = 0
{-1, 1}
Solve the following quadratic equation by factoring:
x2 - 4 = 0
{-2, 2}
Solve the following quadratic equation by square root: x2 = -4
{2i, -2i}
What is the quadratic formula?
x = -b +- sqrt(b2 - 4ac) /(2a)
i2 = ___
-1
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 square root: 6x2+4 = -339-x2
{7i, -7i}
Solve the following quadratic equation by using the quadratic formula: x2 + 6x + 5 = 0
x = -1, x = -5
Simplify the complex expression:
(2-3i) + (2+7i)
4+4i
Solve the following quadratic equation by factoring.
n2 - 7n + 6=0
{6, 1}
Solve the following quadratic equation by factoring:
x3-5x2+2x-10= 0
{5, +i:sqrt2, -i:sqrt2}
Solve the following quadratic equation by square root: (x-4)2 = 25
{-1, 9}
Determine the number of real solutions the following quadratic has using the discriminant: 9x2 +12x + 4= 0
1 Real Solution
Simplify the complex expression:
(6-3i) - (2+7i)
.
4-10i
Solve the following quadratic equation by factoring.
b2 - 8b = 20
{10, -2}
Solve the following quadratic equation by factoring:
5n2 -7n+2=0
{2/5, 1}
Solve the following quadratic equation by completing the square. Round your answers to the nearest hundredth: x2 + 10x +5 = 0
{-0.53, -9.47}
Solve the following quadratic equation by using the quadratic formula: 2x2 + 9x + 4 = 0
{-1/2, -4}
Simplify the complex expression:
(2-5i)(3+4i)
26-7i
Solve the following quadratic equation by factoring.
9x2 + 5x - 24= 8x2 + -5x
{-12, 2}
Find the real solution only:
125x3 +343= 0
x = -7/5
Solve the following quadratic equation by completing the square (nearest tenth):
x2 - 8x + 13 = 0
x = 5.7, x = 2.3
Solve the following quadratic equation by using the quadratic formula (nearest tenth):
4x2 - 17x =-12
{0.9, 3.4}
Simplify the complex expression:
(4+11i)(3-6i)
78+9i