A school designer wants to create a whiteboard with the optimal dimensions to enhance learning. It is determined that if one side of the whiteboard is x + 3y inches, the other side should be x^2+7xy-9y^2 inches. Write an algebraic expression for the area of such a whitebo

Question

A school designer wants to create a whiteboard with the optimal dimensions to enhance learning. It is determined that if one side of the whiteboard is x + 3y inches, the other side should be x^2+7xy-9y^2  inches. Write an algebraic expression for the area of such a whitebo

asnaseer · Answer

the area is just the product of the two sides, so area is given by:$$A=(x+3y)(x^2+7xy-9y^2)$$