The side length of the square is x meters. Reduce one side by 1.2 meters and the other side by 1.5 meters. The area of the rectangle is 14.4 square meters less than that of the square

The side length of the square is x meters. Reduce one side by 1.2 meters and the other side by 1.5 meters. The area of the rectangle is 14.4 square meters less than that of the square

Equation: X & # 178; - (x-1.2) (x-1.5) = 14.4
x²-x²+2.7x-1.8=14.4
2.7x=16.2
x=6

A rectangle, reduce the length by 5 meters to become a square, and reduce the area by 75 square meters, how much is the original area

The reduced area is 75. If the width of the reduced figure is 5, then the length is 75 / 5 = 15 meters. This length is the width of the original rectangle. If the length of the original rectangle is 15 + 5 = 20, then the area of the original rectangle is 15 * 20 = 300 square meters

The ratio of length to width of a rectangular grassland is 7:2. How many square meters has its area been reduced by reducing its length by 15 meters to square grassland

90 square meters!
15/（7-2）=3m;
3×2×15=90m2.

When the length of a square is increased by 3cm and the other side is decreased by 3cm, the rectangle is reduced by 1cm and 2cm
Area big 7 square centimeter, seek the area of original square?

Let the original side length be X
(X-3)(X+3)=(X-1)(X-2)+7 X=6
Original square area: x ^ 2 = (6 ^ 2) = 36 square centimeters