Question

Помогите пж пж умоляю
7класс

Answer 1

$1)3 {a}^{2} -2 {b}^{3} = 3 \times {( - 17)}^{2} - 2 \times {( - 2)}^{3} = 867 + 16 = 883$
$2)5 {x}^{2} {y}^{3} + 4(x - y) = - 5 \times \frac{1}{4} + 4( - \frac{1}{2} + 1) = \frac{ - 5}{4} + 2 = \frac{3}{4}$
$3) {m}^{2} + 2mn + {n}^{2} = {(m + n)}^{2} = {( - 5 + 4)}^{2} = {( - 1)}^{2} = 1$

$4)3p {q}^{2} - 2 {p}^{2} q = pq(3q - 2p) = - 12 \times (9 + 8) = - 12 \times 17 = - 204$