6 зад
18 × 2_=2
18
20 ×1_ = 20__
9 9
2- 20_ = 1_ - 20__ = _40-9_ = _39
9 2 9 18 18
Объяснение:
1)24^4/3²*8³=3^4*8^4/3²*8³=3^(4-2)*8^(4-3)=3²*8=9*8=72
1)
2)18*(1/9)²-20*(1/9)=18* 1/81 -20* 1/9=18/81 -20/9=(18-180)/81=-162/81=-2
3)4/25+15/4=(16+375)/100=391/100=3,91
3)
6 зад
18 × 2_=2
18
20 ×1_ = 20__
9 9
2- 20_ = 1_ - 20__ = _40-9_ = _39
9 2 9 18 18
Объяснение:
1)24^4/3²*8³=3^4*8^4/3²*8³=3^(4-2)*8^(4-3)=3²*8=9*8=72
1)![\frac{24^{4}}{3^{2}*8^{3}=\frac{3^{4}*8^{4}}{3^{2}*8^{3}}=//=[tex]3^{4-2} * 8^{4-3}=3^{2}*8=9*8=72](/tpl/images/1612/9439/17f32.png)
2)18*(1/9)²-20*(1/9)=18* 1/81 -20* 1/9=18/81 -20/9=(18-180)/81=-162/81=-2
3)4/25+15/4=(16+375)/100=391/100=3,91
3)