Question

find the values of a2 + B2 and A4 plus B4 when a + b is equal to 5 and a b is equal to 4 ​

Answer 1

Answer:

(a+b)²= (5)²

S.O.B.S

(a²+ b²+ 2ab) = 25

(a²+ b²) + 2ab= 25

(a²+b²)+ 2(4)=25

(a²+b²)= 25 – 4

(a²+b²) = 17

à⁴+b⁴ =?

(a²+b²)² = 17²

(a⁴+b⁴+2a²b²) = 289

(a⁴+b⁴)+(2a²b²)=289

(a⁴+b⁴)+(32)= 289

(a⁴+b⁴)= 289–32

(a⁴+b⁴)= 257

hope it helped you ✌️✌️✌️✌️