If the length of each side of a square is increased by 1 cm, the area of the original square will be increased by 17 cm

If the length of each side of a square is increased by 1 cm, the area of the original square will be increased by 17 cm

Let the length of the original square be x cm
(x+1)²-x²=17
2x+1=17
x=8
8 × 8 = 64 (cm2)
So the original square area is 64 square centimeters