1)2,156
2)8,7
3)0,585
4)0,003
(34217-25329)*902-(58508+498115)/69= 8888*902-556623/69=8016976-8067=8008909
<span>(m^2 +4-3n)-(2-m^2)+n=
=m^2 +4-3n-2+m^2+n=
=2m^2+2-2n=
=2 * 2^2+2-2*4=2*4+2-8=2</span>
1)24,4+(-2,5)=21,9
2)2,5+24,4=26,9
3)-2,5•24,4=-61
4)(2,5+1,5)•24,4=97,6