Question

factorise. x+1divided by x²-3x²-9x-5​

Answer 1

Answer:

x+1) x³- 3x²- 9x- 5(x²-4x-5

     x³+ x²

          -4x²-9x

          -4x²-4x

                 - 5x- 5

                - 5x- 5

                       0

∴x²-4x-5=0

⇒x²-5x+1 - 5=0

⇒x(x-5)+1(x-5)=0

⇒(x+1)(x-5)=0

⇒x=-1 or, x=5

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