Find the sum and product of the roots for each of the following quadratic equations
`x^(2)+3x-28=0`

Find the sum and product of the roots for each of the following quadratic equations x^(2)+3x=0

Find the sum and product of the roots for each of the following quadratic equations 3y^(2)-y-4=0

Find the sum and product of the roots for each of the following quadratic equations 3+(1)/(a)=(10)/(a^(2))

Solve each of the following quadratic equations: 15x^(2)-28=x