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If x²+1/x²=23, find the value of 8x3-27y3+90xy+115 |
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Answer» Letx - 1/x = ySQUARING BOTH SIDE'S( x -1/x )² = y²=>x² + 1/x² - 2 = y²=>y² = 23 - 2=>y² = 21=>y = +√21ORy = -√21=>(x - 1/x) = √21OR(x - 1/x) = -√21Explanation:PLS MARK ME AS A BRAINLIST |
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