Question

помогите СРОЧНО
7 класс алгебра

Answer 1

Ответ:

4.

А

$c^{13} \times {c}^{8} = {c}^{13 + 8} = {c}^{21}$

Б

${y}^{23}\div{y}^{14} = {y}^{23 - 14} = {y}^{9}$

В

${( {x}^{3}) }^{2} = {x}^{2 \times 3} = {x}^{6}$

5.

А

$0.7 {xy}^{2} \times ( - 2 {x}^{2} {y}^{3} ) = - 1.4 {x}^{3} {y}^{5}$

Б

${(3 {n}^{3} )}^{4} = {3}^{4} \times {( {n}^{3} )}^{4} = 81{n}^{12}$

В

${( - 4 {c}^{8} {d}^{2} )}^{3} = {( - 4)}^{3} \times { ({c}^{8} )}^{3} \times {( {d}^{2} )}^{3} = - 64 {x}^{24} {y}^{6}$

6.

А

${( {x}^{3} )}^{4} \times {x}^{14} = {x}^{3 \times 4} \times {x}^{14} = {x}^{12} \times {x}^{14} = {x}^{12 + 14} = {x}^{26}$

Б

$1.5 {a}^{2} {b}^{3} \times 4 {a}^{3} {b}^{4} = 6 {x}^{2 + 3} {y}^{3 + 4} = 6 {x}^{5} {y}^{7}$