Question

if A and B are zeros of polynomial x square - 3 x + Q then find a square + b square​

Answer 1

Answer:

p²-2q=a²+b²

Step-by-step explanation:

$\alpha + \beta = - b \div a$

a+b=p

$\alpha \beta = c \div a$

ab =q

Now,

as becouse

$( a+ b) {}^{2} = {a}^{2} + {b}^{2} + 2ab$

P²=a²+b²+2q

a²+b²=p²-2q