Question

16. Expand
(5 - 2 m ) ( 4m+4 ) (-5+4m )​

Answer 1

Answer:

$- 32 {m}^{3} + 120 {m}^{2} - 12m - 100$

Step-by-step explanation:

$(5 - 2m)(4m + 4)( - 5 + 4m) \\ = (20m + 20 -8 {m}^{2} - 8m)( - 5 + 4m) \\ = - 100m + 80 {m}^{2} - 100 + 80m + 40 {m}^{2} - 32 {m}^{3} + 40m - 32m \\ = - 32 {m}^{3} + 120 {m}^{2} - 12m - 100$

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