Răspuns :
[5²-(5³ x 3+4*2⁵-7³)/2⁴]²/25-84/12=
[25-(375+128-343)/16]²/25-7=
(25-160/16)²/25-7=
9²/25-7=
81/25-7=
3.24-7=
-3.76
[25-(375+128-343)/16]²/25-7=
(25-160/16)²/25-7=
9²/25-7=
81/25-7=
3.24-7=
-3.76