# precalculus

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solve the equation in the complex number system

x^4+x^3+4x^2+10x-60=0

• precalculus -

x^4+x^3+4x^2+10x-60
=(x+3)(x-2)(x^2 + 10)
= (x+3)(x-2)(x + i√10)(x - i√10)

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