Y^2=169 what are the solutions

asked Sep 19, 2021 228k views

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${y}^(2) = 169$

${y}^(2) - 169 = 0$

(y - 13)(y + 13) = 0

$y - 13 = 0 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: y + 13 = 0$

$\: \: \: \: \: \: \: \: \: y = 0 + 13 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: y = 0 - 13$

$\: \: \: \: \: \: \: \: \: y = 13 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: y = - 13$

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