Simplify the following expression: x2x6
x8
Add the following complex numbers. Make sure your answer is in a+bi form.
(2+3i) + (9+6i)
11+9i
Multiply the following complex numbers. Make sure your answer is in a+bi form.
6i(2-4i)
24+12i
If the discriminant of a quadratic equation is ________, then the equation will have two real solutions.
positive
Simplify the following expression:
2z7
Add the following complex numbers. Make sure your answer is in a+bi form.
(3+2i) + (-6+9i)
-3+11i
Multiply the following complex numbers. Make sure your answer is in a+bi form.
(4+2i)(6+4i)
16+28i
If the discriminant of a quadratic equation is ________, then its graph will have one x-intercept.
zero
Simplify the expression below
(x4x6)3
x30
Subtract the following complex numbers. Make sure your answer is in a+bi form.
(10+2i) - (6+4i)
Multiply the following complex numbers. Make sure your answer is in a+bi form.
(3-2i)(9+i)
29-15i
True or False: the equation below has two real solutions.
x2-8x+9=0
True
Express in simplest radical form:
x2/5
5(root)x2
Subtract the following complex numbers. Make sure your answer is in a+bi form.
(10-4i) - (-6+2i)
16-6i
Multiply the following complex numbers. Make sure your answer is in a+bi form.
(9i)2
-81
A quadratic equation has coefficients a = 1, b = 6, and c = 13. Find the solutions of this equation.
-3+-2i
Simplify the following expression:
or 1/x
Simplify the following expression. Make sure your answer is in a+bi form.
(10-i) + (3-2i) - (-6+4i)
19-7i
Multiply the following complex numbers. Make sure your answer is in a+bi form.
(10+2i)(10-2i)
104
Solve the equation below for x:
(x-3)2=-25
x=3(+-)5i