Factorise the given polynomials:
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x^3 + x^2 - 4x^2 - 4x - 5x - 5
= x^2 ( x + 1) - 4x(x +1) - 5(x +1)
= (x +1)(x^2 - 4x - 5)
= (x +1)[ x^2 - 5x + x - 5]
= (x +1)[ x (x - 5) + 1(x-5)]
= (x +1)(x - 5)(x+1)
= x^2 ( x + 1) - 4x(x +1) - 5(x +1)
= (x +1)(x^2 - 4x - 5)
= (x +1)[ x^2 - 5x + x - 5]
= (x +1)[ x (x - 5) + 1(x-5)]
= (x +1)(x - 5)(x+1)
Answered by
0
x^3 + x^2 - 4x^2 - 4x - 5x - 5
= x^2 ( x + 1) - 4x(x +1) - 5(x +1)
= (x +1)(x^2 - 4x - 5)
= (x +1)[ x^2 - 5x + x - 5]
= (x +1)[ x (x - 5) + 1(x-5)]
= (x +1)(x - 5)(x+1)
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