21-06-2016
Mathematics

contestada

Show that 3 is a zero of the polynomial 2x^3-x^2-13x-6.

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21-06-2016

p(x) = 2x³-x²-13x-6

p(3) = 2(3)³ -3² -13*3 -6

= 2*27 -9-39-6

= 54-9-39-6

= 0

therefore 3 is the zero of the polynomial.

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