Find the area of a square with side, s = 2x + 3. hint: a = s2

A = 4x² + 12x + 9

Step-by-step explanation:

area of a square = s² ( s is the length of the side of the square )

here s = 2x + 3, hence

A = (2x + 3)² = (2x + 3)(2x + 3)

To expand multiply each term in the second factor by each term in the first factor

A = 2x(2x + 3) + 3(2x + 3) ← distributing

   = 4x² + 6x + 6x + 9 ← collect like terms

   = 4x² + 12x + 9

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step-by-step explanation: