Which change in m∠7 would make lines l and m parallel by the converse of the same side exterior angles theorem? a increase by 5°. b decrease by 85°. c double and then increase by 90°. d triple and then decrease by 5°.

Dwould be the answer

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 *_*