Square and rectangle

Calculate the side of a square, which area equals the area of the rectangle having a length of 3 cm greater and by 2 cm smaller than the side of the square.

Correct answer:

a =  6 cm

Step-by-step explanation:

a^2 = (a+3)·(a-2)

a = 6

a = 6/1 = 6

a = 6

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