If a² + b² = 65 and a = 1 then b equals?
- 8
- 7
- 6
- None of these
Explanation
Given:
a² + b² = 65
a = 1
Put value of a:
1² + b² = 65
1 + b² = 65
Subtract 1 from both sides:
b² = 64
Take square root:
b = 8 (positive value)
So, b = 8.
Last verified on 15-05-2026
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