Solve Quadratics by Taking Square Roots Daily Grade

Front

What letter represents an imaginary number?

Back

i

Front

What does i^2 equal?

Back

-1

Front

Multiply: (4 – 3i)(-7 – 2i)

Back

-34 + 13i

Front

Simplify: (10 + 15i) - (48 - 30i)

Back

-38 + 45i

Front

What is the square root of 50?

Back

5√2

Front

What is the definition of an imaginary number?

Back

A number that can be written as a real number multiplied by i, where i = √-1.

Front

What is the standard form of a complex number?

Back

a + bi, where a and b are real numbers.

Front

How do you add complex numbers?

Back

Add the real parts and the imaginary parts separately.

Front

How do you multiply complex numbers?

Back

Use the distributive property and apply the fact that i^2 = -1.

Front

What is the conjugate of a complex number a + bi?

Back

a - bi.