Сперва упростить, а потом подставить значения m, a, x, a, b(ja - если)и прошу не пишите,...

Решите задачу:

$a) \: {m}^{2} - 0.5m + 2.5m = {m}^{2} + 2m = m(m + 2) = 0.1(0.1 + 2) = 2.1 \times 0.1 = 0.21 \\ b) \: 4 {a}^{2} b - (5 {a}^{2} b - {a}^{2} b + 8a) = 4 {a}^{2} b - 4 {a}^{2} b + 8a = 8a = 8 \times ( - 1) = - 8 \\ c) \: - {x}^{3} - (6 {x}^{3} - (5 {x}^{3} + x) - 2 {x}^{3}) = - {x}^{3} - (6 {x}^{3} - 5 {x}^{3} - x - 2 {x}^{3} ) = - {x}^{3} + {x}^{3} + x = x = 0.1 \\ d) \: {a}^{2} b - 5ab + a {b}^{2} - {a}^{2} b + 5ab = a {b}^{2} = 2 \times {( - 1)}^{2} = 2 \times 1 = 2$