Prove by direct method that for any real number x, y if x = y, then x2 – InterviewSolution

InterviewSolution

1.

Prove by direct method that for any real number x, y if x = y, then x2 = y2

Answer»

Let p: x = y; x, y∈ R

On squaring both sides, we get

x² = y² : q

p ⟹q

Hence, proved.

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