Question

The dimensions of a playground are represented by a width of 10x+2 feet and a length of 5x -5 feet. Write an expression that represents the area of the playground?

A.50x^2+30x+4
B.50x^2-40x-10
C.50x^2+40x+10

Answer 1

B) 50x^2-40x-10

Explanation:

Assuming that the playground is rectangular, A=L•W

A=(5x-5)(10x+2) Use the FOIL method

= 50x^2+10x-50x-10 Combine like terms

= 50x^2-40x-10

Answer 2

B) 50x^2-40x-10

Explanation:

Assuming that the playground is rectangular, A=L•W

A=(5x-5)(10x+2) Use the FOIL method

= 50x^2+10x-50x-10 Combine like terms

= 50x^2-40x-10