Algebra 2 - Bellwork Quiz 2/14/2020

Simplify:  $-8\left(2x+y\right)+5\left(2x-3y\right)$  

• -6x-23y

• 26x+23y

• 6x-7y

• 33x

Solve:
 $2x^2=4x^2-242$  

•  $\pm11$  

•  $\pm5$  

•  $\pm3$  

•  $\pm11i$  

Factor:  $b^2-16b+64$  

•  $\left(b-8\right)^2$  

•  $\left(b+8\right)\left(b-8\right)$  

•  $\left(b+8\right)^2$  

•  $b\left(b-16\right)$  

Evaluate:
 $f\left(x^2\right)\ when\ f\left(x\right)=x^4-2x^2+12$  

•  $x^8-2x^4+12$  

•  $x^6-2x^3+12$  

•  $x^6-2x^4+12$  

•  $x^{16}-2x^4+12$  

What is the amplitude and period of:
 $y=4\sin\left(2\theta\right)$  . Select two answers

• amplitude = 4

• amplitude = 2

• period =  $4\pi$  

• period =  $\pi$