Complex Numbers
What is i?
Solve using the quadratic formula. What is the value for b?
x^2-5x-14=0
b=-5
What is the square of 361?
19/-19
Simplify the expression.
(4 + 2i) + (3 + 5i)
7 + 7i
Solve using the quadratic formula. What are the values for a & c?
2x^2+2x-12=0
a=2, c=-12
What is the square root of negative 225?
15i or -15i
Simplify the expression.
(-2 + 9i) + (6 - 3i)
4 + 6i
Using the quadratic formula. What are the values for a, b & C?
x^2-4x+4=0
a=1, b=-4 & c=4
What is the square of 18?
324
Simplify the expression.
(8 + 2i) - (4 - 3i)
4 + 5i
Solve using the quadratic formula
2x^2+3x-20=0
5/2 and -4
What is the square of 9?
81
Simplify the expression.
(-3 - 8i) - (4 + 2i)
-7 - 10i
Solve using the quadratic formula
2x^ 2 − 7x − 13 = −10
(7+-\sqrt73)/4
What is the square root of -64?
-8i or 8i