The length of a rectangle is 4 cm longer than the width, The perimeter is 80cm. Find the length and the width.

Ithink it is 7. 16

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 *_*