Factoring Perfect Sq Trinomial & Diff of Two Sq

Match the corresponding patterns of special products.

• C, A, B

• A, C, B

• C, B, A

• B, A, C

Which of the following is a difference of two squares?

• $16m^2+40m+25$

• $5x^3+15x$

• $9a^2-100$

• $3b^2-7$

Which of the following is a perfect square trinomial?

• $9a^2-100$

• $3x^2+10x-15$

• $16m^2+40m+25$

• $25b^2-9$

 $36x^2-1$  

•  $\left(6x+1\right)\left(6x-1\right)$  

•  $\left(-6x+1\right)\left(-6x-1\right)$  

•  $\left(6x+1\right)^2$  

•  $\left(6x-1\right)^2$  

 $25n^2-36$  

•  $\left(5n-6\right)^2$  

•  $\left(5n+6\right)^2$  

•  $\left(5n+6\right)\left(5n-6\right)$  

•  $\left(25n+36\right)\left(25n-36\right)$  

 $r^2-18r+81$  

•  $\left(5r+9\right)\left(5r-9\right)$  

•  $\left(r-9\right)^2$  

•  $\left(r+9\right)^2$  

•  $\left(r-9\right)\left(r+9\right)$  

 $49k^2+28k+4$  

•  $\left(k+2\right)^2$  

•  $\left(7k+2\right)^2$  

•  $\left(7k-2\right)^2$  

•  $\left(7k-2\right)\left(7k+2\right)$  

 $b^2-49$  

•  $\left(b+49\right)^2$  

•  $\left(b-7\right)^2$  

•  $\left(b-7\right)\left(b+7\right)$  

•  $\left(b+49\right)\left(b-49\right)$  

 $16k^2-72k+81$  

•  $\left(4k-9\right)^2$  

•  $\left(4k+9\right)^2$  

•  $\left(4k-9\right)\left(4k+9\right)$  

•  $\left(4k-81\right)$  

 $121x^2-144$  

•  $\left(11x-12\right)^2$  

•  $\left(11x+12\right)^2$  

•  $\left(11x-12\right)\left(11x+12\right)$  

•  $\left(121x+144\right)\left(121x-144\right)$