If-1 is a zero of the polynomial 2xcube -xsquare-5x-2, find its zeroes
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p(x)=2x3-x2-5x-2
(-1)=2×(-1)3-(-1)2-5(-1)-2
=-2-1+5-2
=5-5
=0
(-1)=2×(-1)3-(-1)2-5(-1)-2
=-2-1+5-2
=5-5
=0
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