Quadratic Formula and Complex Numbers

Front

Simplify √-28

Back

2i√7

Front

Simplify √28

Back

2√7

Front

Simplify -1/3 √-90

Back

-i √10

Front

Simplify -3√-8

Back

-6i√2

Front

Simplify √-1

Back

i

Front

What is the Quadratic Formula?

Back

x = (-b ± √(b² - 4ac)) / (2a)

Front

What does 'i' represent in complex numbers?

Back

i represents the imaginary unit, where i² = -1.

Front

How do you express a complex number?

Back

A complex number is expressed as a + bi, where a and b are real numbers.

Front

What is the discriminant in a quadratic equation?

Back

The discriminant is b² - 4ac, which determines the nature of the roots.

Front

What are the possible values of the discriminant?

Back

If > 0: two real roots; = 0: one real root; < 0: two complex roots.