Unit 2: Quadratic Functions Checkpoint #1

Does this graph have a maximum and/or minimum value?

• maximum

• minimum

• neither

• both

What are the
x-intercepts of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3
• x = 2 or x = -3
• The are no real roots
• x = 2 or x = 3

What is the range of this function?

• (- ∞,+∞)
• [0, +∞)
• [-2, +∞)
• [2, +∞)

What is the complex conjugate of  4-3i?

• A.  1/(4-3i)
• B. 1/(4+3i)
• C.  -4 + 3i
• D.  4 + 3i

Simplify:
i⁷

• i
• -i
• 1
• -1

 $-3+6i-\left(-5-3i\right)-8i$  

 $\left(1-7i\right)^2$  

 $5i\cdot i\cdot-2i$  

Factor the following expression.

 $3k^2-16k-64$  

Factor the following expression.

 $x^2+10x+9$