Question

ОЛГЕБРА 7 КЛАСС не много. срочно

Answer 1

5.

1. $\frac{ {7}^{9} \times {7}^{11} }{ {7}^{18} } = \frac{ {7}^{20} }{ {7}^{18} } = {7}^{2} = 49$
2. $\frac{ {5}^{6} \times {5}^{3} }{ {( {5}^{2} })^{4} } = \frac{ {5}^{9} }{ {5}^{8} } = 5$

6.

1.

$2 \frac{2}{3} {x}^{5} {y}^{8} \times {( - 1.5 {x}^{3} {y}^{6} })^{2} = 2 \frac{2}{3} {x}^{5} {y}^{8} \times (2.25 {x}^{6} {y}^{12} ) = 6 {x}^{11} {y}^{20}$

2.

$\frac{ {( {a}^{1 + n}) }^{3} }{ {a}^{3} } = \frac{ {(a \times {a}^{n} )}^{3} }{ {a}^{3} } = \frac{ {a}^{3} \times {a}^{3n} }{ {a}^{3} } = {a}^{3n}$

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