If α, β are zeros of the quadratic polynomial f(x) = 2x²-5x+7, find a) α^2β + αβ^2

b) 1/α - 1/β

If α , β are zeros of the quadratic polynomial f(x) 2x+ 11x + 5, find

a) α^4 + β^4

b) l/α +1/β - 2αβ

If α, β are zeros of the quadratic polynomial f(x) = 2x²-5x+7, find

a) α^2β + αβ^2

b) 1/α - 1/β

If α , β are zeros of the quadratic polynomial f(x) 2x+ 11x + 5, find

a) α^4 + β^4

b) l/α +1/β - 2αβ