Question

Find the value of a ²+1/a²,if )(a+1/a)²=49 using a suitable identity
with full solution do it yourself please in a notebook please ​

Answer 1

Step-by-step explanation:

mate here we use identity (a+b)²=a²+2ab+b²

Answer 2

Answer:

(a+b)^2=a^2+2ab+b^2

using this identity,

(a+1/a)^2=49

=> a^2+2.a.1/a+1/a^2=49

=> a^2+1/a^2+2=49

=> a^2+1/a^2=49-2

=> a^2+1/a^2=47

so, a^2+1/a^2=47