Answer:
ANSWER
[tex](5m - 2n)(25 {m}^{2} + 10mn + 4 {n}^{2}) [/tex]
[tex]5m(2 {m}^{2} + 10mn + 4 {n}^{2} ) - 2n(25 {m}^{2} + 10mn + 4 {n}^{2} )[/tex]
[tex]10 {m}^{3} + 50 {m}^{2}n + 20m {n}^{2} - \\ 50 {m}^{2} n - 20m {n}^{2} - 8 {n}^{3} [/tex]
[tex]10 {m}^{3} - 8 {n}^{3} (ans)[/tex]
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