Use a suitable identity
(1) (2x + 5)2
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Answer:
=(2x+5) 2
=4x+10 it is a right answer.
Answered by
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Answer:
Identity 1=(a+b)^2
(2x+5)^2
(2x)^2+2*2x*5+(5)^2=
4x^2+20x+25
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