1.

Find the errors and correct the following mathematical sentence:(2x)2 + 5x = 4x + 5x = 9x

Answer»

(2x)2 + 5x = 4x + 5x = 9x 

⇒ 4x2 + 5x = 4x + 5x 

⇒ 4x2 = 4x

⇒ x2 = x 

⇒ x ≠ √x 

∴ The given sentence is wrong. 

Correct sentence is (2x)2 + 5x = 4x2 + 5x.



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