The rectangle below has an area of x^2 – 6x – 7 square
meters and a width of X – 7 meters.
What expression represents the length of the
rectangle?

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 *_*