It is neccessary to have a 40% antifreeze solution in the radiator of a certain car. the radiator now has 40 liters of 20% solution. how many liters of this should be drained and replaced with 100% antifreeze to get the desired strenght

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 *_*

Does the problem say y=x+4?