Expansion Patterns

Use difference of two squares to expand and simplify

 $\left(x-3\right)\left(x+3\right)$  

•  $x^{2\ }-6x+9$  

•  $x^2+6x-9$  

•  $x^2+9$  

•  $x^2-9$  

Use difference of two squares to expand and simplify

 $\left(a+11\right)\left(a-11\right)$  

•  $a^2+11$  

•  $a^2-11$  

•  $a^2-22a-121$  

•  $a^2-121$  

Use difference of two squares to expand and simplify

 $\left(3-2d\right)\left(3+2d\right)$  

•  $3-2d^2$  

•  $9-2d^2$  

•  $9-4d^2$  

•  $9-6d-4d^2$  

Use difference of two squares to expand and simplify

 $\left(3e-2f\right)\left(3e+2f\right)$  

•  $9e^2-4f^2$  

•  $3e^2-2f^2$  

•  $9e^2-12ef-4f^2$  

•  $9e^2+12ef+4f^2$  

Use the perfect square rule/pattern to expand

 $\left(x+3\right)^2$  

•  $x^2+6$  

•  $x^2+9$  

•  $x^2+6x+9$  

•  $x^2+6x+6$  

Use the perfect square rule/pattern to expand

 $\left(2n-5\right)^2$  

•  $4n^2+25$  

•  $4n^2-10n+10$  

•  $4n^2-10n+25$  

•  $4n^2-20n+25$  

Use the perfect square rule/pattern to expand

 $\left(5-3k\right)^2$  

•  $25+9k^2$  

•  $25-30k+9k^2$  

•  $25-30k-9k^2$  

•  $25-15k+9k^2$  

Use the perfect square rule/pattern to expand

 $2\left(3x+6\right)^2$  

•  $18x^2+72x+72$  

•  $9x^2+36x+36$  

•  $18x^2+36x+36$  

•  $18x^2+72$  

What is the perimeter of rectangle with side lengths x+y and x-y

• $2x+2y$

• $2x-2y$

• $4x-4y$

• $4x$

What is the area of a rectangle with side lengths of x+y and x-y?

• $x^2-y^2$

• $x^2-2xy+y^2$

• $x^2+2xy+y^2$

• $x^2+2xy-y^2$