The polygons are similar. find the value of X

It should be 11. Consider the side that is 6 is 4 less than the side that is 10. Therefore the side that is x must be 4 less than 15. So it’s 11.

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 *_*