5х²у=8 => х²у=8/5.
1) 20х²у = 4 * (5х²у) = 4 * (8) = 32.
2) 5х⁴у² = х²у * (5х²у) = 8/5 * (8) = 64/5 = 12,8.
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5х²у=8 => х²у=8/5.
1) 20х²у = 4 * (5х²у) = 4 * (8) = 32.
2) 5х⁴у² = х²у * (5х²у) = 8/5 * (8) = 64/5 = 12,8.