MCR Unit 8 - Rational Expressions

Which factors out when simplifying? $\frac{3x^2-25x-18}{x^2-7x-18}$  

•  $3x+2$  

•  $x-9$  

•  $x+2$  

•  $x-2$  

Tags

CCSS.HSA.APR.D.6

Solve  $\frac{5m-3}{63}=\frac{9}{21}$  

• m = 6

• m = 12/5

• m = 7

• m = 3

Tags

CCSS.7.EE.B.4A

Which factor cancels when simplifying  $\frac{y^2+4y+4}{y^2-25}\times\frac{y^2+5y}{y+2}$  

•  $y+5$  

•  $y-5$  

•  $y-2$  

•  $y$  

Tags

CCSS.HSA.APR.D.6

Solve $\frac{n+7}{4}\ =\ 3$  

• n = 5

• n = 4

• n = -1
  

• n = -4

Tags

CCSS.7.EE.B.4A

Which is a factor of  $x^2-36$  

•  $x+6$  

•  $x-4$  

•  $x+18$  

•  $x-12$  

Tags

CCSS.HSA.APR.B.2

Simplify $\frac{x^2+6x}{x^2-14+48}\div\frac{x^2-36}{x^2-12x+36}$  

•  $\frac{x}{x-8}$  

•  $\frac{x+6}{x-6}$  

• 1

•  $\frac{x-6}{x+8}$  

Tags

CCSS.HSA.APR.D.6

Simplify  $\frac{b^2-4}{b^2-49}\cdot\frac{b+7}{b+2}$  

•  $\frac{b-2}{b-7}$  

•  $\frac{b-7}{b-2}$  

•  $\frac{b+7}{b+2}$  

•  $\frac{b+2}{b+7}$  

Tags

CCSS.HSA.APR.D.6

Which factor cancels out when simplifying $\frac{x^2-16}{x^2-36}\div\frac{x+4}{x+6}$  

•  $x+4$  

•  $x-4$  

•  $x-6$  

•  $x+9$  

Tags

CCSS.HSA.APR.D.6

Simplify $\frac{y^2+6y+5}{y^2-5y-6}$  

•  $\frac{y+5}{y-6}$  

•  $\frac{y+1}{y-6}$  

•  $\frac{y+5}{y+1}$  

•  $\frac{y-6}{y+1}$  

Tags

CCSS.HSA.APR.D.6

Which is a factor of  $2x^2-2x-24$  

• 2x + 8

• x - 12

• x + 3

• x - 3