Answers

  • Brainly User
2015-11-25T23:23:04+05:30
Your answer is :- 

Using (a+b)(a-b) = a² - b²

We get = 6.25l² - 0.25m²

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2015-11-26T06:04:18+05:30
(2.5L - 0.5m) x (2.5L - 0.5m)
first we have to mulitiply first 2.5L with 2.5L - 0.5m after that we have to do -0.5m with  2.5L - 0.5m
2.5L(2.5L - 0.5m)= 6.25L^2 - 1.25Lm
 similarly -0.5m( 2.5L - 0.5m) = -1.25mL+2.5m^2
= 6.25L^2-1.25Lm-1.25mL+2.5m^2

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