Unit 6 exam Re-test

Which of the following are the factors of  $x^2+4x+4$  ?

•  $\left(x+1\right)\left(x+4\right)$  

•  $\left(x-1\right)\left(x-4\right)$  

•  $\left(x+2\right)\left(x+2\right)$  

•  $\left(x-2\right)\left(x-2\right)$  

Which of the following are the factors for  $x^2-16$  ?

•  $\left(x-4\right)\left(x+4\right)$  

•  $x\left(x-16\right)$  

•  $\left(x-1\right)\left(x-16\right)$  

•  $\left(x+1\right)\left(x-16\right)$  

What is the perimeter of a square is the length is  $4x+3$  and the width is  $2x-1$  ?

•  $6x+2$  

•  $6x+4$  

•  $12x-8$  

•  $12x+4$  

Find the area of a rectangle with a width of 
 $\left(5x+2\right)$ and a length of  $\left(x-9\right)$ ? HINT: A=LW

•  $6x^2+45x+18$  

•  $5x^2+47x+18$  

•  $6x^2-43x+18$  

•  $5x^2-43x-18$  

Which expressions is equivalent to   $-21x^2-35x$  ?

•  $-7x\left(3x-5\right)$  

•  $-7x\left(3x+5\right)$  

•  $7x\left(3x-5\right)$  

•  $7x\left(3x+5\right)$