Rectangle - general expression

Find the area of a rectangle whose width is x-2 units and length of x+4 units.

Correct answer:

A = x^2+2x-8

Step-by-step explanation:

a = x2 b = x+4  A=a b A=(x2)(x+4)  A = x2+4x2x8  A=x2+2x8



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