Question

A cube shaped suitcase has a length of 3x + 2 units. What is an expression for its area of the

base?

Answer 1

`\huge\boxed{\sf 9x^2+12x+4 \ units^2}`

Explanation:

Given that,

Length of cube = l = 3x + 2 units

Base Area:

`= l * l\\\\= (3x+2)(3x+2)\\\\= 3x(3x+2)+2(3x+2)\\\\= 9x^2+6x+6x+4\\\\= 9x^2+12x+4 \ units^2\\\\\rule[225]{225}{2}`