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Find and correct the errors in the following mathematical statements (2 x) ^2 + 5 x=4 x +5 x= 9x

Find and correct the errors in the following mathematical statements 

Q8. 

( 2 x)^2 + 5 x = 4 x +5x = 9 x

Answers (1)
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Our L.H.S. is 
 \Rightarrow (2x)^{2}+5x = 4x^2+5x     
 R.H.S. = 9x
It is clear from the above that L.H.S. is not equal to R.H.S.
So, the correct  statement is   
 (2x)^{2}+5x = 4x^2+5x

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