Question

Помогите прошу срочно❤❤❤❤

Answer 1

Ответ:

$1) 7mn^2*(-2m^2n^6)=-14m^3n^8\\\\2)0,4^3b^5 * 1,3a^3b = 0,52a^{3+3}b^5*b^1=0,52a^6b^{5+1} = 0,52a^6b^6\\\\3)-2,8b^3c^7*1,5b^2c^5=-4,2b^{3+2}c^{7+5}=-4,2b^5c^{12}\\\\4) 0,45m^3n^2p^4*1*\frac{1}{9} m^8n^{11}p^6=\frac{9}{20}m^3n^2p^4*\frac{1}{9}m^8n^{11}p^6=\frac{1}{20} m^3n^2p^4m^8n^{11}p^6=\frac{1}{20}m^{11}n^{13}p^{10}\\\\5)12x^3y^9z^{10}*1*\frac{5}{6}x^7y=2x^3y^9z^{10}*5x^7y=10x^{10}y^{10}z^{10}\\6) 2/9a^5c(-15b^3c^2)*1,2a^3b^6=\frac{2}{9}a^5c(-15b^3c^2)*\frac{6}{5}a^3b^6=$

$-\frac{2}{3}a^5c*3b^3c^2*2a^3b^6=-2a^5cb^3c^2*2a^3b^6=-4a^8b^9c^3=-4a^8b^9c^3$