Question

if -1 and 2 are the two zeros of polynomial 2 x cube minus x square - 5 x minus 2 find its third zero​

Answer 1

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Answer 2

Let d third zero be x

Zeros:-1,2,x

F(x)=2x^3-×^2-5x-2

Sum of d zeros = -b/a

-1+2+x=1/2

1+x=1/2

X=-1/2

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