7.1-7.4 Review

 $\left(-8x-12\right)+\left(9x+4\right)$  

• -17x-16

• 1x-8

• -17x+8

•  $x^2-8$  

 $\left(-3p^3+5p^2-2p\right)+\left(-p^3-8p^2-15p\right)$  

•  $2p^3+3p^2+13p$  

•  $-4p^3-13p^2-17p$  

•  $-2p^3+13p^2-13p$  

• 
   $-4p^3-3p^2-17p$  
  

Which is a like term of  $5x^2$  

• 5x

• 10

•  $17x^2$  

•  $9x^3$  

 $\left(6x+9\right)-\left(3x-1\right)$  

• 3x+10

• 3x+8

• 9x+10

• 9x+8

 $\left(4m^2-m+2\right)-\left(-3m^2+10m+4\right)$  

•  $m^2+9m+6$  

•  $7m^2-11m-2$  

•  $7m^2+9m-2$  

•  $m^2-11m+2$  

When you add and subtract polynomials, variables and exponents will stay the same. ONLY the coefficient will change.

• True

• False

When multiplying polynomials, ADD coefficients and ADD exponents

• True

• False

Multiply
 $\left(c-6\right)\left(c-5\right)$  

•  $c^2-11c+30$  

•  $2c-11c-30$  

•  $c^2-c-11$  

•  $c-11$  

 $\left(3k-1\right)\left(4k+9\right)$  

•  $7k^2+8$  

•  $7k^2+31k+9$  

•  $12k^2+23k-9$  

•  $12k+23k+8$  

 $\left(x+4\right)\left(x^2+3x+2\right)$  

•  $x^3+7x^2+14x+8$  

•  $x^3+1x^2+12x+8$  

•  $2x^2+4x+6$  

•  $2x^2+7x+8$