Question

If the width of a rectangle is x + 2 and the length is twice as long, what is the area?
A. 6x + 12
B. 2x² + 6x + 4
C. 2x² + 8x + 6
D. 2x² + 8x + 8

Answer 1

What do you think?

Answer 2

area = length*breadth = (2*(x+2))*(x+2)

Answer 3

2x² + 8x + 8

Answer 4

okay what is the formula for area ?
A=l*b
given b= X +2
and l=2*b=2*(X+2)
just substitute l and b in the eqn :)
A would be in terms of x