Question

This is algebra 1 btw. Please help, thank you :)

Answer 1

Given:-

The sides of the rectangle are 5 and 9.

To find the area after each side is increased by x.

So after each side is increased by x. we get the side lengths as,

`(2x+5),(2x+9)`

So now we use the formula,

`\begin{gathered} A=l* b \\ A=(2x+5)(2x+9) \\ A=4x^2+18x+10x+45 \\ A=4x^2+28x+45 \end{gathered}`

So our required area is,

`4x^2+28x+45`