Question

and
129. If (m + n) = 3 and mn = 1, find the value of (m^2 + n^2)
(m^4 + n^4)​

Answer 1

Answer:

${m}^{2} + {n}^{2} = 9 - 2 = 7$

${m}^{4} + {n}^{4} = 49 - 2 = 47$

wish it is helpful to you