Which of the following represents the area of a rectangle whose length is 3x + 5 and whose width is
x - 2?

A. 3x2 - x - 10

B. 3x2 - 10

C. 3x2 + x - 10

D. 3x2 - 11x - 10

Question

Which of the following represents the area of a rectangle whose length is 3x + 5 and whose width is
x - 2?

A. 3x2 - x - 10

B. 3x2 - 10

C. 3x2 + x - 10

D. 3x2 - 11x - 10

jim_thompson5910 · Answer

A = L*W

A = (3x+5)*(x-2)

A = 3x(x-2) + 5(x-2)

A = ???

fernandez555 · Answer

@jim_thompson5910 3x2 + x - 10 ???

jim_thompson5910 · Answer

What do you get when you distribute out 3x(x-2) + 5(x-2)

fernandez555 · Answer

3x2 and 10 @jim_thompson5910

jim_thompson5910 · Answer

3x(x-2) + 5(x-2)

3x*x+3x*(-2) + 5(x) + 5(-2)

3x^2 - 6x + 5x - 10

last step is???

fernandez555 · Answer

-x + 3x^2 -1??? @jim_thompson5910

fernandez555 · Answer

@jim_thompson5910 wait i simplified. ahhhhh idk, im lost i havent done this in forever

jim_thompson5910 · Answer

3x(x-2) + 5(x-2)

3x*x+3x*(-2) + 5(x) + 5(-2)

3x^2 - 6x + 5x - 10

3x^2 - x - 10

jim_thompson5910 · Answer

Not sure where the -1 came from