jenniferhilgerp5uyng jenniferhilgerp5uyng

19-03-2018
Mathematics

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find all zeros of the polynomial function b(x)=x3-4x2-3x+12

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WojtekR WojtekR

19-03-2018

[tex]x^3-4x^2-3x+12=0\\\\x^2\big(x-4\big)-3\big(x-4\big)=0\\\\\big(x^2-3\big)\big(x-4\big)=0\\\\\big(x-\sqrt{3}\big)\big(x+\sqrt{3}\big)\big(x-4\big)=0\\\\\\\boxed{x=\sqrt{3}\qquad\vee\qquad x=-\sqrt{3}\qquad\vee\qquad x=4}[/tex]

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