Question 49

loading...

Prev/Next links

waecmaths question: 

Simplify ${{(x-3y)}^{2}}-{{(x+3y)}^{2}}$

Option A: 

$2(x+3y)$

Option B: 

$2(x-3y)$

Option C: 

$-12xy$

Option D: 

$6xy$

waecmaths solution: 

$\begin{align}  & {{(x-3y)}^{2}}-{{(x+3y)}^{2}}=(x-3y-x-3y)(x-3y+x+3y) \\ & =(-6y)(2x) \\ & =-12xy \end{align}$

maths year: 
maths topics: