Unit 2 Test (A)

Which is the correct graph of $y=-2x^2+16x-36$ ? 

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Which is the correct graph of $y=-\left(x+2\right)^2-3$ ? 

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Factor and solve $x^2+5x=14$  .

• -2 and 7

• 10 and 8

• -8 and -10

• 2 and -7

Factor and solve $9n^2-36n=405$  

• 5 and -9

• -5 and 9

• 4 and 9

• 5 and 8

Factor and solve $k^2+72=17k$  .

• -6 and 4

• 9 and 8

• -9 and 2

• -10 and -5

Factor and solve $10n^2+70n=-120$  .

• 1 and 8

• -3 and -4

• -7 and -3

• 6 and -1

Factor and solve $40m^2=144-216m$ . 

•  $\frac{7}{8}$  and -4

•  $\frac{1}{5}$  and  $-\frac{8}{5}$  

•  $-\frac{7}{2}$  and 9

•  $\frac{3}{5}$  and -6

Factor and solve $6b^2+24=25b$ . 

•  $-\frac{7}{3}$  and 5

•  $-\frac{1}{3}$  and  $\frac{8}{3}$  

•  $\frac{3}{2}$  and  $\frac{8}{3}$  

•  $-\frac{3}{2}$  and  $-\frac{8}{3}$  

Solve $4a^2+2=-31$ by taking square roots. 

•  $\pm\frac{29}{4}$  

•  $\pm\frac{i\sqrt{29}}{2}$  

•  $\pm\frac{i\sqrt{33}}{2}$  

•  $\pm\frac{33}{4}$  

Solve $7x^2-2=460$ by taking square roots. 

•  $\pm\sqrt{66}$  

•  $\pm\frac{458}{7}$  

•  $\pm57$  

•  $\pm2\sqrt{14}$