Three is the geometric mean between itself.
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Yes it is completely true. The geometric mean is a term which is proportionally distant from the major and minor extremes. and the number 3 is the geometric mean between itself

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*