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Question

Find and correct the errors in the following mathematical statements.
(2x)2+4(2x)+7=3x2+8x+75y+2y+y7y=0

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Solution

1)(2x)2+4(2x)+7=3x2+8x+7
Here, the square of 2x is not done proper.
The correct statement will be :
(2x)2+4(2x)+7=4x2+8x+7

2)5y+2y+y7y=0
Here, right hand side will not be zero.
The correct statement will be :
5y+2y+y7y=y

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