Question

решите 1,2,3 номер даю 25 баллов

Answer 1

Ответ:

$1.$

$a)4.5\times y^2 \times xy= 4.5xy^3$

$b)3{1\over3} \times a \times a^2=3{1\over3}a^3$

$2.$

$2{1\over2}\times x^2\times {4\over5} \times x^4={5\over2}\times {4\over5}\times x^6=2x^6$

$2x^6=2\times (-3)^6=2\times 729=1458$

$3.$

$a){(3^3)^3\times (3^5)^6\over (3^5)^6}=(3^3)^3=3^9=19683$

$b)(3xy)^3\times (-3x^2y^3)^2=27x^3y^3\times 9x^4y^6=243x^7y^9$