If x square + 1 upon x square equals to 4 a find x
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Step-by-step explanation:
x² + 1/x² = 4
= x⁴ + 1/x² = 4
= x⁴ + 1 = 4x²
= x⁴ + 4x² + 1 = 0
= x².( x² + 4 + 1 ) = 0
= x² + 4 + 1 = 0
= x² = - 5
= x = √-5 answer
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