Unit 8 Test Review Part 2

Unit 8 Test Review Part 2

Multiple Choice

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Multiple Choice

Solve

 $b^2-2b-8=0$  

• -2, 4

• -8

• ±8

• No real solution

Multiple Choice

Solve for "n".

n² - 2n = 0

• n = 2 and 0

• n = -2 and 0

• n = 2

• n = 0

Multiple Choice

Solve

16a² - 9 = 0

• a = ^-3/₄, ³/₄

• a = ^-4/₃, ⁴/₃

• a = ^-9/₁₆, ⁹/₁₆

• a = ^-16/₉, ¹⁶/₉

Multiple Choice

Solve: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Multiple Choice

Solve:  $2x^2-x-15=0$  

•  $x=-\frac{5}{2}$  and  $x=3$  

•  $x=\frac{5}{2}$  and  $x=-3$  

•  $x=\frac{5}{2}$  and  $x=3$  

•  $x=-\frac{5}{2}$  and  $x=-3$  

Multiple Choice

Solve:  $3x^2+7x-6=0$ 

•  $x\ =\ 3$  and  $x=-\frac{2}{3}$  

•  $x=-3$  and  $x=\frac{2}{3}$  

•  $x=-3$  and  $x=-\frac{2}{3}$  

•  $x=3$  and  $x=\frac{2}{3}$  

Multiple Choice

Solve 6x²-4 = -5x

• x = 1/2, x = 4/3

• x = -4/3, x = 1/2

• x = 8, x = -3

• x = -8, x = 3

Multiple Choice

Solve by taking square roots:

k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no solution

Multiple Choice

Solve by taking square roots:

5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Multiple Choice

√24

• $\pm$ 4√6

• $\pm$ 2√6

• $\pm$ 6√2

• $\pm$ 2√12

Multiple Choice

Solve:  $x^2+8=28$  

• No solution

•  $x=\pm4\sqrt{5}$  

•  $x=\pm6$  

•  $x=\pm2\sqrt{5}$  

Multiple Choice

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

Multiple Choice

Solve using the Quadratic Formula:

x² + 4x + 3 = 0

• x = 1 and x = 3

• x = 6 and x = -2

• x = -1 and x = -3

Multiple Choice

Solve using the quadratic formula:

 $b^2+2b-5=0$  

•  $-1+\sqrt{6}$  , $-1-\sqrt{6}$  
  

•  $2+2\sqrt{6}$  , $2-2\sqrt{6}$  
  

•  $\frac{2+2\sqrt{6}}{2}$  , $\frac{\left(2-2\sqrt{6}\right)}{2}$  
  

•  $-1-\sqrt{24}$   $-1+\sqrt{24}$  ,