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Question
Use a suitable identity to get the following products.
(2y + 5) (2y + 5)
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Solution
The product will be as follow
(2y + 5) (2y + 5) = (2y + 5)2
= (2y)2 + 2(2y) (5) + (5)2 [(a + b)2 = a2 + 2ab + b2]
= 4y2 + 20y + 25
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