Question

If alpha and bita are zeros of x²-px+q find aplha ²+bita ²

Answer 1

Comment if this solution is true.
See the image which i have attached.

Answer 2

Sol:
Given α and β are zeroes of the polynomial f(x)=x2+px+q

α+ β = -p αβ = q
α² + β² = (α + β)² - 2αβ
=(-p)^2-2q
=p^2-2q