Question

If alpha and bita are the zeroes of polynomial x^2+x-2. Find the values of alpha square + bita square

Answer 1

the solution is provided in the picture

Answer 2

the previous answer is right and with the full explanation. you can also find the value of alpha and beta

by using this equation

$\frac{ - b \binom{ + }{ - } \sqrt{ {b}^{2} - 4ac} }{2a}$

then you can find the value of alpha square and beta square