Math, asked by akifsiddique778, 11 months ago

plz answer the question in factorization method ​

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Answered by Delta13
0

Given,

 \frac{1}{x - 1}   - \frac{1}{x + 5}  =  \frac{6}{7}

Now,

 =  &gt;  \frac{x + 5 - (x - 1)}{(x - 1)(x + 5)}  =  \frac{6}{7}  \\  \\  =  &gt;  \frac{6}{ {x}^{2} + 5x - x - 5 }  =  \frac{6}{7}  \\  \\  =  &gt;  \frac{6}{ {x}^{2}  + 4x - 5}  =  \frac{6}{7}  \\  \\    cross \: multiplying \\  =  &gt;  \frac{7}{ {x}^{2} + 4x - 5 }  =  \frac{6}{6 }  \\</p><p>  =  &gt;  {x}^{2}  + 4x - 5 = 7 \\  =  &gt;  {x}^{2}  + 4x - 5 - 7 = 0 \\ =  &gt;  {x}^{2}  + 4x - 12 = 0 \\  factorising \\  =  &gt;  {x}^{2}  + 6x - 2x - 12 = 0 \\  =  &gt; x(x + 6) - 2(x + 6) = 0 \\  =  &gt; (x + 6)(x - 2) = 0 \\  =  &gt; x =  - 6 \: and \: x = 2

Hence, x=-6 and x=2

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