Write the following polynomial in coefficient form.
State whether the given algebraic expression are polynomial? Justify.
`y + 1/y`
`2 - 5 sqrt x`
`x^2 + 7x + 9`
State Whether the Given Algebraic Expression Are Polynomial? Justify.
`2m^(-2) + 7m - 5`
Write the coefficient of m3 in the given polynomial.
`-3/2+m - sqrt 3 m^3`