OBLICZ
A) x - x ² x =
B) x(7-x) x =
C) a = -5
D) (1+x) : x x = 0,75
a ) 2/3 - 2/3^2 =
2/3 - 4/9 =
6/9 - 4/9 = - 2/9
b) -1/2 ( 7 - (-1/2)) =
- 7/2 - 1/4 =
- 14/4 - 1/4 = -15/4 czyli - 3 całe i 3/4
c) pierwiastek - 5 ^2 + 11 =
- 5 + pierwiastek z 11
d) (1+0,75) : 0,75 =
1/1 * 1/0,75 + o,75 /1 * 1/o,75 =
1 i 1/o,75
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a ) 2/3 - 2/3^2 =
2/3 - 4/9 =
6/9 - 4/9 = - 2/9
b) -1/2 ( 7 - (-1/2)) =
- 7/2 - 1/4 =
- 14/4 - 1/4 = -15/4 czyli - 3 całe i 3/4
c) pierwiastek - 5 ^2 + 11 =
- 5 + pierwiastek z 11
d) (1+0,75) : 0,75 =
1/1 * 1/0,75 + o,75 /1 * 1/o,75 =
1 i 1/o,75