Question

6. If a + b + c = p and ab + bc + ca = q;
find a2 + b2 + c2.
Need Help​

Answer 1

Answer:

p2-2q No solution only anwer

Answer 2

Given:

Ab + bc + ca = q

a + b + c = p

Solution:

$= > {p}^{2} = {a}^{2} + {b}^{2} + {c}^{2} + 2q \:$

$= > \: {a}^{2} + {b}^{2} + {c}^{2} = {p}^{2} - 2q$

Therefore a² + b² + c² = p² - 2q