Unit 4 Post Test Activity

Front

What is the value of i^79?

Back

-i

Front

Simplify 6√{-75}.

Back

30i√3

Front

Solve using the quadratic formula: x^2 + 4x - 40 = -8.

Back

-8 and 4

Front

If h = -2t^2 + 7t + 4, how high is the toy after 1 second?

Back

9

Front

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

Back

-38 + 45i

Front

What is the definition of the imaginary unit i?

Back

i is defined as the square root of -1.

Front

What is the quadratic formula?

Back

The quadratic formula is x = (-b ± √(b^2 - 4ac)) / (2a).

Front

What is the process to simplify a square root of a negative number?

Back

Factor out -1 to introduce i, e.g., √{-a} = i√a.

Front

What does it mean for a quadratic equation to have real solutions?

Back

It means the discriminant (b^2 - 4ac) is greater than or equal to zero.

Front

How do you find the vertex of a quadratic function?

Back

The vertex can be found using the formula (-b/(2a), f(-b/(2a))).