Quadratic Formula Vocab

Front

Roots of a quadratic equation: \(\frac{-b\pm\sqrt[]{b^2-4ac}}{2a}\)

Back

Quadratic Formula

Front

Determines the nature of roots using b²-4ac.

Back

Discriminant

Front

Square root of a negative number uses i.

Back

Imaginary Number

Front

A real and imaginary number in the form a+bi where a, b are real.

Back

Complex Number

Front

Also known as the multiplicative inverse, to turn a number into a fraction.

Back

Reciprocal

Front

Change the sign between two terms

Back

Conjugate

Front

Bottom of a fraction

Back

Denominator

Front

Top of a fraction

Back

Numerator

Front

Values for the quadratic equation -2x² - 5x - 9 = 0:

Back

a = -2, b = -5, c = -9

Front

Use the quadratic formula for: 0 = -x² - 5x + 12

Back