Review 3.3 and 3.4

Front

What is the simplified form of √−49?

Back

7i

Front

What are the factors AND solutions of x² + 2x – 3 = 0?

Back

(x - 1)(x + 3); x=1, x=-3

Front

What is the simplified form of √18?

Back

3√2

Front

How do you write a complex number?

Back

a + bi

Front

What is the simplified form of √−25?

Back

5i

Front

What is the definition of a complex number?

Back

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.

Front

What is the imaginary unit 'i'?

Back

The imaginary unit 'i' is defined as the square root of -1, i.e., i = √−1.

Front

How do you simplify √(a²b)?

Back

√(a²b) = a√b, where a ≥ 0.

Front

What is the quadratic formula?

Back

The quadratic formula is x = (-b ± √(b² - 4ac)) / (2a) for the equation ax² + bx + c = 0.

Front

What are the solutions of the equation x² - 4 = 0?

Back

x = 2 and x = -2.