Unit 2 Test - Algebra II 9/28/2023

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Solve    2x² + 7x - 15 = 0

• -1.5 or 5
• No Solution
• -5 or 1.5
• 0.7 or 5

Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Solve by Quadratic Equation

4x²-7x+5=0

• (7 ± i √31 ) / 8

• (-1 ± i √55 ) / 8

• (7 ± √31) / 4

• (1 ± i √57) / 8

-2x² = -98

• -7
• 7
• ±7
• ±49

(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

(10+3i) - (2-9i)

• 20-27i
• 12-7i
• 8+12i
• 20-27i²

Which of the following is equivalent to (3-5i)-(6+2i)

• -3-7i
• -3-3i
• 3-3i
• 9-7i

What letter usually represent imaginary number?

• a
• i
• j
• x

(1-3i)(2+5i)

• 22-i
• 16-i
• 17-i