Question

if the sides of a square are increased by 3m,the area becomes 64m2. find the length of a side of the original square

Answer 1

$a-the\ length\ of\ a\ side\ of\ the\ original\ sqare\\\\(a+3)^2=64\Rightarrow a+3=\sqrt{64}\\\\a+3=8\\\\a=8-3\\\\a=5\ (m)\leftarrow solution$