Question

How do you find the area of a rectangle that has sides of `x+7` and `x+5`?

Answer 1

`x^2+12x+35`

Explanation:

Area of rectangle= length`xx`width

#in this case

Area`=(x+7)(x+5)`

now multiply out

`=x^2+5x+7x+35`

`=x^2+12x+35`

Answer 2

`"area "=x^2+12x+35" square units"`

Explanation:

`• " area of rectangle "=" lb"`

`"where "l" is the length and "b" the breadth"`

`"let "l=x+7" and "b=x+5`

`rArr"area "=(x+7)(x+5)`

`"expand factors using FOIL"`

`rArr"area "=x^2+12x+35" square units"`