a^2-3a+1=0 find a^2+1/a^2
Answers
Answered by
13
7
Step-by-step explanation:
Given:
a² - 3a + 1 = 0
To find:
a² + 1/a²
How to get Answer ?
1. First analyse the question,
2. Solve the given,
3. Do Multiplication, Division, Square, Cube As required.
4. Use Algebra Formula.
5. Simplify till answer.
Solution:
[Dividing both side by a]
[Squaring both side]
Therefore, the required answer is 7.
Algebra Formula Used
(a+b)² = a² + b² + 2ab
Answered by
22
Now, dividing both side by , we get,
Now, squaring both side, we get,
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