Question

(4/5-1/2+1)-²+1/1+3²-(4-5)-²=?

Answer 1

(4/5-1/2+1)-²+1/1+3²-(4-5)-² = (8-5+10/10)-²+1+9-1 = (13/10)-²+9 = (100/169)+9=
= (169.9)+100/169 = 1621/169 ≈ 9,60

Answer 2

(4/5-1/2+1)-²+1/1+3²-(4-5)-²
(5/4-2+1)² +1+9 (-4+5)²
(25/16 - 4+1) +10 (+1)²
(25-64+16/16) +11
( -23/16) +11
-1,4375+11
9,56