Question

if 1/a +a = 5, a^5 + 1/a^ 5​

Answer 1

Answer:

123

Step-by-step explanation:

squaring both side ,we have

a^2+1/a^2=7-------------(1)

again cubing both side of original equation,we have

a^3+1/a^3=18------------(2)

multiplying equation 1 and 2,we have

a^5+1/a^5+(a+1/a)=126

thus result will be 123