CSA #3 Semester 2 Midterm

Simplify.

 $-4r^{-8}s^0$  

Reminder: negatives flip, power to 0=1

•  $-\frac{4}{r^8}$  

•  $-\frac{4s}{r^8}$  

•  $\frac{r^8}{4}$  

Simplify.

 $\left(x^5\right)^9$  

•  $x^{45}$  

•  $x^{14}$  

•  $9x^5$  

Tags

CCSS.HSA.APR.A.1

Simplify.
 $\frac{y^9\cdot\ y^8}{y^4}$  

1. add littles on top
2. subtract littles

•  $\frac{1}{y^{13}}$  

•  $y^5$  

•  $y^{13}$  

simplify:

 $\left(-4t\right)^6$  

1.distribute 6 into everything inside ( )
2. use calculator for big

•  $4096t^6$  

•  $4096t^1$  

•  $-4t^6$  

Simplify.

  $\left(\frac{d}{4}\right)^6$  

1. distribute the 6 to everything inside parenthesis 
2. use calculator for big

•  $\frac{d^6}{24}$  

•  $\frac{d^6}{4096}$  

•  $-\frac{d^6}{24}$  

Evaluate (use a calculator)

 $7^{-2}$  

•  $\frac{1}{49}$  

•  $-49$  

•  $-\frac{1}{14}$  

Tags

CCSS.8.EE.A.1

Evaluate (use a calculator)

 $\left(-3\right)^3$  

•  $27$  

•  $-27$  

•  $\frac{1}{27}$  

Tags

CCSS.6.EE.A.1

Find the sum (combine like terms)

 $\left(y+5\right)+\left(3y-9\right)$  

• 4y + 5

• 6y - 6

• 4y - 4

Tags

CCSS.7.EE.A.1

Find the difference. (subtract like terms)

 $\left(2x^2+6x-11\right)-\left(5x^2-1x+7\right)$  

•  $7x^2+7x-18$  

•  $7x^2+5x-4$  

•  $-3x^2+7x-18$  

Tags

CCSS.HSA.APR.A.1

FOIL or BOX method.

 $\left(m^1-4\right)\left(m^1+3\right)$  

•  $m^{2\ }-1m-12$  

•  $m^2-4m-12$  

•  $m^2-m+12$  

Tags

CCSS.HSA.APR.A.1