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If 2m−3n =9 and mn=4, evaluate 8m³−27n³​

Answer» <html><body><p>(2m−3n)at [m=1] &amp; [n=−1]now=[3×1−2(−1)][2×−3(−1)][3+2][2+3]5×5=25</p></body></html>


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