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Question
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
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Solution
The products will be as follow
(1.1m − 0.4) (1.1 m + 0.4)
= (1.1m)2 − (0.4)2 [(a + b) (a − b) = a2 − b2]
= 1.21m2 − 0.16
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