The formula of an area of a rectangle:
[tex]A=wl[/tex]
w - width
l - length
Therefore we have:
A = (4x - 6)(x + 1)
use distributive property (a + b)(c + d) = ac + ad + bc + bd
A = (4x)(x) + (4x)(1) + (-6)(x) + (-6)(1) = 4x² + 4x - 6x - 6
Answer: B. 4x² -2x - 6
