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OpenStudy (anonymous):
Which of the following is NOT a zero of the polynomial shown below? f(x)=2x^4-x^3-42x^2+16x+160
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OpenStudy (anonymous):
2x^4-x^3-42x^2+16x+160 = 0 2(-4)^4-(-4)^3-42(-4)^2+16(-4)+160 2(256) - (-64) - 42(16) -64 + 160 512 + 64 - 672 - 64 + 160 576 - 672 - 64 + 160 -96 - 64 + 160 -160 + 160 0
OpenStudy (anonymous):
its -4
OpenStudy (anonymous):
Thanks
OpenStudy (anonymous):
your welcome :)
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