`1)`
`35.49+35.52-35`
`=35.(49+52-1)`
`=35. 100`
`=3500`
`2)`
`5.25.7.2.4`
`=(5.2).(25.4).7`
`=10.100.7`
`=1000.7`
`=7000`
`3)`
`50-[(20-2^3):2+2]`
`= 50-[(20-8):2+2]`
`=50-( 12 :2+2)`
`=50- (6+2)`
`=50-8`
`=42`
`4)`
`2448:[16+2-(4^2-2^2)]`
`= 2448:[16+2-(16-4)]`
`= 2448:(16+2-12)`
`= 2448:(18-12)`
`=2448:6`
`=408`
`@ThienVy`
\(1.\) \(35.49+35.52-35=35.\left(49+52\right)-35=35.101-35=3535-35=3500\)
\(3,\) \(5.25.7.2.4=\left(4.25\right).\left(5.2\right).7=100.10.7=1000.7=7000\)
\(5,\) \(50-\left[\left(20-2^3\right)\div2+2\right]=50-\left[\left(20-8\right)\div2+2\right]=50-\left[12\div2+2\right]=50-\left[6+2\right]=50-8=42\)
\(7,\) \(2448\div\left[16+2-\left(4^2-2^2\right)\right]=2448\div\left[16+2-\left(2^4-2^2\right)\right]=2448\div\left[16+2-12\right]=2448\div\left[18-12\right]=2448\div6=408\)
\(9,\) \(9^{10}\div\left(9^2.12-9^2.3\right)=9^{10}\div\left[9^2.\left(12-3\right)\right]=9^{10}\div\left(9^2.9\right)=9^{10}\div9^3=9^7\)
