Question

Памигитееееее...... 21 бал​

Answer 1

$5,3-9\cdot (-4,4)=5,3+9\cdot 4,4=5,3+39,6=44,9\\\\\\-4\cdot (-6,2)-8,4=4\cdot 6,2-8,4=24,8-8,4=16,4\\\\\\(3\cdot 10^2)^3\cdot (2\cdot 10^{-5})=3^3\cdot 10^6\cdot 2\cdot 10^{-5}=27\cdot 2\cdot 10^{6-5}=54\cdot 10^1=540\\\\\\(7\cdot 10^{-2})^2\cdot (2\cdot 10^5)=7^2\cdot 10^{-4}\cdot 2\cdot 10^5=49\cdot 2\cdot 10^{5-4}=98\cdot 10^1=980$