Question

if side of square is decreased by 3 times , its area is decreased by​

Answer 1

Answer:

Step-by-step explanation:

Let the side of the square be 'x'

If the length side is decreased by 3 units, the side of square is (x-3)

Area of square = side ×side

=(x-3)(x-3)

=x^2+9-6x

Area of square -9 +6x =x^2

Therefore if the side of the square is decreased by 9 units.

Answer 2

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Let, the side of square is x

area of square = side × side

= x × x

= x²

side of square after change = x - 3

area of square = side × side

= x - 3 × x - 3

=x² - 3x - 3x + 9

= x² - 0x + 9

= x² - 9

9 decrease