OpenStudy (rositaluv):

Write a simplified polynomial expression to represent the area of the rectangle below.

5 years ago
OpenStudy (rositaluv):
5 years ago

OpenStudy (anonymous):

To do this, we need to know that the area of the rectangle is A=b*h. We see that the base, b= 2x-4, and the height, h = x+5 Then A=(2x-4)*(x+5) To simplify, we need to multiply this out, and we are going to FOIL. FIRST: 2x*x OUTSIDE: 2x*5 INSIDE: -4*x LAST: -4*5 FOIL: 2x^2 +10x -4x -20 Combine "like terms" 2x^2+6x-20=A HTH!

5 years ago