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Question

If 2 is a zero of the polynomial p(x)=x3ax2+bx+c, then which of the following equations is true?

A
2a+4b+c+8=0
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B
4a+2b+c+8=0
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C
4a+4b+c+8=0
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D
4a2b+c8=0
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Solution

The correct option is B 4a+2b+c+8=0
Since 2 is a zero of the polynomial p(x), p(2) = 0.
23a(22)+b(2)+c=0
84a+2b+c=0
4a+2b+c+8=0

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