Math, asked by nirali18, 1 year ago

please solve this question

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Answered by FocusGuy

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nirali18: right answer

nirali18: i don't know how to do

Answered by zaidazmi8442

${a}^{2} - {b}^{2} = 36 \: and \: \\ a + b = 4 \\ (a + b )(a - b)= 36 \\ a - b = 9 \\ so \: {(a - b)}^{2} = 81$

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