Reason for Incorrect Algebraic Equation?

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HussanAli
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The first equation is false whil second is true. What is reason?
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The first equation is simply wrong algebra. An easy way to illustrate this would be via a numerical example.
Consider: 2 + 5 = 7
Following your first equation, you would obtain 2^2 + 5^2 = 7^2, which is clearly incorrect.