If x+1/x=3 find x²+1/x²
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Heya !!
X + 1/X = 3
Squaring both sides , we get
( X + 1/X)² = (3)²
X² + 1/X² + 2 × X × 1/X = 9
X² + 1/X² + 2 = 9
X² + 1/X² + 2 = 9
X² + 1/X² = 9 - 2
X² + 1/X² = 7
X + 1/X = 3
Squaring both sides , we get
( X + 1/X)² = (3)²
X² + 1/X² + 2 × X × 1/X = 9
X² + 1/X² + 2 = 9
X² + 1/X² + 2 = 9
X² + 1/X² = 9 - 2
X² + 1/X² = 7
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