3.5^2-16:2^2=3.25-16:4 2^3.17-23.14=8.17-322
= 75-4 = 136-322
= 71 = -186
17.85+15.17-120= 1445+255-120 20-[30-(5-1)^2]= 20-[30-4^2]
= 1580 = 20-[30-16]
= 20-14=6
3^6 . 3^2 + 23 . 2^2= 729.9+23.4 37. 24 + 37 . 76 + 63 . 79 + 21. 63
= 6561+92 = 37.(24+76)+63.(79+21)
= 6653 = 37.100+63.100
= 3700+6300=10000
69 . 113 – 27 . 69 + 69 . 14 + 31 90 – (2^2 . 25 – 3^2 . 7)
=69.(113-27+14)+31 =90-(4.25-9.7)
=69.100+31 =90-(100-63)
=6900+31=6931 =90-37=53