Jon is 6 years older than marie.
5 years ago, jon was twice as old as marie.
how old is marie now?

You have to give us options

The answer is the numbers between =5 and 5

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 *_*