Y is inversly proportional to x^3 y=28 when x=a work out the value of y when x=2a

y = 7/2

Step-by-step explanation:

The above statement is written as

where k is constant of variation

y = 28 x = a

The formula for the variation is

when x = 2a

y is

Hope this helps you

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 *_*