Question

Упростите выражение:
1. 3m^2n • 0,4mn^3
2. 7 1/3b^3c^2 • 9/11a^4b^5
3. -5x^4y^2z^8 • (-0,8x^6y^8z^2)
4. -5 3/7abc • 3,5a^12b^10c

Answer 1

3m•2n•0,4mn^3=2m^2•n^3

71/3 b^3 c^2•9/11 a^4 b^5=6a^4 b^8 c^2

-5x^4 y^2 z^8•(-0,8x^6 y^8 z^2)=4x^10 y^10 z^10=4(〖xyz)〗^10

-53/7 abc•3,5a^12 b^10 c=19a^13 b^11 c^2