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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
2
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B
3
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C
4
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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.

It is given that, ab=0 and b0
a=0

Hence, the polynomial becomes, p(x)=bx3+cx2+dx+e

The degree of the polynomial is 3.

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