Math, asked by purva5555, 9 months ago

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Answered by anindyaadhikari13

Number 1

${x}^{2} - 11x - 80$

$= {x}^{2} - 16x + 5x - 80$

$= x(x - 16) + 5(x - 16)$

$= (x + 5)(x - 16)$

Number 2

${m}^{2} + 17mn - 84 {n}^{2}$

$= {m}^{2} + 21mn - 4mn - 84 {n}^{2}$

$= m(m + 21) - 4(m + 21)$

$= (m + 21)(m - 4)$

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Answered by Mysteryboy01

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