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Question

Find and correct errors of the following mathematical expressions:
$$ (2x)^{2}+4(2x)+7 = 2x^{2} +8x+7 $$


Solution

The given statement is incorrect.
Only the first term is written incorrect.
Correct statement is 
$$ (2x)^{2}+4(2x) +7 = 4x^{2}+8x+7 $$

Mathematics
NCERT
Standard VIII

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