cdogharrington cdogharrington

30-07-2016
Mathematics

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Determine the zeros of f(x)=x^3+7x^2+10x-6

Respuesta :

30-07-2016

Hello,
x^3+7x^2+10x-6=x^3+3x^2+4x^2+12x-2x-6
=x²(x+3)+4x(x+3)-2(x+3)
=(x+3)(x²+4x-2)
=(x+3)(x+2-√7)(x+2+√7)

zeroes={-3,-2+√7,-2-√7}

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