47.98 × 4.16 + √325 × 12.91 + ? = 79.93 × 5.91
189500 – 22650 + 48× ? – 352×18 = 162674
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Suppose xy = -15 and (x² + y²) = 34, then determine the value of (x – y).
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find (x+4)³ +1/((x+4)³)