Question

помогите срочно пожалуйста!!​

Answer 1

Ответ:

1)

${c}^{2} - 2{c}^{2} + 3c - 4 - ( {c}^{3} - 3 {c}^{2} - 5) = {2}^{2} - 2{2}^{2} + 3 \times 2 - 4 - ( {2}^{3} - 3 {2}^{2} - 5) = 4 - 484 + 6 - 4 - 8 + 1024 + 5 = 3 + 540 = 543$

2)

${4x}^{2} - ( - {2x}^{3} + {4x}^{2} - 5) = {4( - 3)}^{2} -( - {2( - 3)}^{3} + {4( - 3)}^{2} - 5) =4 \times 9 - ( 54 + 36 - 5) = 36 - 85 = - 49$