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Mathematics

Grade10

Easy

Question

Use the difference of two squares to find the area of the rectangle.

954
864
874
904

The correct answer is: 864

24*36 = (30 – 6)(30 + 6)
Using the pattern $left parenthesis a plus b right parenthesis left parenthesis a – b right parenthesis equals a squared – b squared comma$
$left parenthesis 30 – 6 right parenthesis left parenthesis 30 plus 6 right parenthesis equals 30 squared – 6 squared equals 900 – 36 equals 864$

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