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Question

What is the degree of the polynomial p(x):

p(x)=ax4+bx3+cx2+dx+e, given ab = 0, b 0



A

3

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B

2

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C

1

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D

5

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Solution

The correct option is B

3


Since the degree of a polynomial is the highest power of the variable, we need to look for this highest power.

Since ab = 0, b 0 it follows that a =0 and b 0. Since b is the first non-zero coefficient and the highest power is 3, this will be the degree. 


Mathematics

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