Question

?.... solve.............?..............​

Answer 1

Answer:

$1 \\ \\ 5l(n + 5l) \\ \\ 2 \\ \\ 2c(2c + 3b) - a(3a + 7c) - b(2b + a)$

Step-by-step explanation:

$1 \\ \\ 4l(10n - 3m + 2l) - 3l(l - 4m + 5n) \\ \\ l(40n - 12m + 8l \: \: - \: \: (3l - 12m + 15n)) \\ \\ l(40n - 12m + 8l \: \: - 3l + 12m - 15n) \\ \\ l(25n + 5l) \\ \\ 5l(5n + l) \\ \\ \\ 2 \\ \\ 4c( - a + b + c) - (3a(a + b + c) - 2b(a - b + c)) \\ \\ - 4ac + 4bc + 4 {c}^{2} - 3 {a}^{2} - 3ab - 3ac + 2ab - 2 {b}^{2} + 2bc \\ \\ 4 {c}^{2} - 3 {a}^{2} - 2 {b}^{2} - ab + 6bc - 7ac \\ \\ 2c(2c + 3b) - a(3a + 7c) - b(2b + a)$

Hope it Helps