What does a multiplier/divider outside the function do to the graph?

If the coefficient squared is greater than one (multiplication), it stretches the graph vertically by the factor of the coefficient.

If the coefficient squared is less than one (division), it compresses the graph vertically by the factor of the coefficient.

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 *_*