Short Answer.

The length of the side of a rectangular desk is given by 3x-y cm. The length of the front is given by 3x+ y cm. What is an algebraic expression for the area of the top of the rectangular desk? Include correct units as part of your answer.

Is the equation (3x-y)(3x+y)?

Question

Short Answer.

The length of the side of a rectangular desk is given by 3x-y cm. The length of the front is given by 3x+ y cm. What is an algebraic expression for the area of the top of the rectangular desk? Include correct units as part of your answer.

Is the equation (3x-y)(3x+y)?

anonymous · Answer

That is the correct equation,
9x^2 - y^2 cm^2

anonymous · Answer

so you have to add the centimeters squared?

anonymous · Answer

yup. even for an equation you have to add that.

anonymous · Answer

(3x-y)(3x+y)
F= 3x*3x = 9x^2
O=3x*y=3xy
I=-y*3x= -3xy
L=-y*y=-y^2
=9x^2 +3xy-3xy-y^2
=9x^2-y^2

anonymous · Answer

oh yeah
=9x^2-y^2 cm^2