7B-2 Practice

What are the solutions to  $4\left(x-8\right)^2=36?$  

• -1 and 17

• 5 and 11

• -4 and 20

• -2 and 14

What are the solutions to  $\left(x-9\right)^2+5=105?$  

• 19

• 109

• 59

• -1

• -41

Find the solutions to  $5x^2+1=81.$  

What value is the largest of the two solutions?  

*Type the number only.  Do not type the x=.*

Find the solutions to  $-6x^2-9=-225.\$  

What value is the smallest of the two solutions?

*Type the value only.  Do not type the x=.*

What are the solutions to $-2\left(x+3\right)^2=-98?$  

• -10 and 4

• -4 and 10

• -52 and 46

• -46 and 52

Find the solutions to  $-x^2+25=0.$  

What value is the largest of the two solutions?

*Type the number only.  Do not type the x=.*

What are the solutions to  $\left(x+6\right)^2-49=0?$  

• 13

• 1

• -1

• 43

• -13

Find the two solutions to  $3x^2-10=17.\$  

What value is the smallest of the two solutions?

*Type the number only.  Do not type the x=.*

What are the solutions to  $-4x^2+160=0?$  

HINT:  Make sure your final answer is completely simplified! :)

•  $\pm\ 2\sqrt{10}$  

•  $\pm\ 4\sqrt{10}$  

•  $\pm\ 40$  

•  $\pm\ 10\sqrt{4}$  

What are the solutions to  $2x^2-200=16?$  

HINT:  Make sure you final answer is completely simplified! :)

•  $\pm\ 3\sqrt{12}$  

•  $\pm\ 2\sqrt{27}$  

•  $\pm\ 6\sqrt{3}$  

•  $\pm\ 108$