Question

Is X³-7x²+5x+√-2 polynomial ?
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Answer 1

Answer:

Yes it is not a polynomial but it is a complex number

√-2 can be written as √2i

so the polynomial will be x^3 - 7x^2 + 5x + √2i where x^3 - 7x^2 + 5x is the real part and √2i is the imaginary part.

Answer 2

yes it is a polynomial

Step-by-step explanation:

Polynomial is a expession in which variables and coefficients are there . We arithmetic operations such as addition ,substraction ,multiplication but not division