Question

What values can Matilda use for x and y ? please help!!!

Answer 1

Matilda have the following equation:

`(2x-y)^2=4x^2-4xy+y^2`

To proof:

`18^2=324`

So, the values of x and y are:

`\begin{gathered} (2x-y)^2=18^2 \\ so,\text{ } \\ 2x-y=18,o \\ 2x-y=-18 \end{gathered}`

In the options available , the correct is x=10 and y =2 becuase:

`2\cdot10-2=18`