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# Whats mistake is done here???

(6)^2=(-6)^2 => 6=-6 => 1=-1

Note by Pratik Raj
2 years, 11 months ago

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Taking square gives ± sign and we will take minus because we have to assume that 6 ≠ -6 · 2 years, 11 months ago

Square root cancels sign And if removing power from squares, then sign of either side remains same · 2 years, 11 months ago