1.

Find the errors and correct the following mathematical sentence:(3x)2 + 4x +7 = 3x2 + 4x +7

Answer»

(3x)2 + 4x +7 = 3x2 + 4x +7 

⇒ (3x)2 = 3x2 

⇒ 9x2 = 3x2 

⇒ 9 = 3 It is not possible 

∴ The given sentence is wrong. 

Correct sentence is (3x)2 + 4x + 7 = 9x2 + 4x + 7.



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