Quadratics & Imaginary Numbers Practice

Front

What is the simplified form of (-9 + 5i) + (3 -2i)?

Back

-6 + 3i

Front

Solve by taking the square root: (x – 5)² = 36

Back

x = -1, 11

Front

What is i²?

Back

-1

Front

What are the zeros of the function y = x² - 4?

Back

x = 0 and x = 4

Front

Find the roots of the equation x² - 8x - 20 = 0.

Back

x = {10, -2

Front

What is the value of i⁴?

Back

1

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / 2a

Front

What does it mean for a number to be imaginary?

Back

An imaginary number is a number that can be written as a real number multiplied by i, where i is the square root of -1.

Front

What is the sum of the roots of the quadratic equation ax² + bx + c = 0?

Back

The sum of the roots is -b/a.

Front

What is the product of the roots of the quadratic equation ax² + bx + c = 0?

Back

The product of the roots is c/a.