if x-1/x=3 then what is the value of x²+1/x²
Answers
Answered by
3
Answer:
x-1/x=3 (a-b)^2=a^2+b^2-2ab
(x-1/x)^2=x^2+1/x^2-2(x*1/x)
(3)^2=x^2+1/x^2-2
9+2 =x^2+1/x^2
x^2+1/x^2=11
Answered by
141
Understanding the concept:
•We are given that x -1/x = 3 and we are said to find the value of x^2 +1/x^2 so first of all as we know that the formula of a^2 +b^2 = (a-b)^2+2ab so we are provided the formula then we will put the values which are given then find the answer.So let's find!
Given:-
•x - = 3
To Find:-
•+
Solution:-
Given,
- x - = 3
As we know,
Now put the value
Additional Information:-
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