Question

A RECTANGULAR CARDBOARD HAS A LENGTH OF ( 4XY-20X) CM AND A WIDTH OF 16XY CM. THE CARDBOARD IS CUT INTO SEVEREL SQUARES WITH SIDES OF 4X CM.
HOW MANY SQUARES CAN BE OBTAINED?

Answer 1

Number of square = area of cardboard /area of square

=( 4xy-20x)(16xy)/16x^2

=( 64x^2y^2 - 320 x^2y)/16x^2

= 4y^2- 20y. answer

Answer 2

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Number of square = area of cardboard /area of square

=( 4xy-20x)(16xy)/16x²

=( 64x²y² - 320 x²y)/16x²

= 4y²- 20y