rozwiąż nierówności :
a)2 |1-x|>4
b)4- 1/2|2x+5|≤0
2 * (1 + x) >4 = 2 + 2x >4 = 2x> 4-2 2x>2/:2 x>1
b) 4 - 1/2 (2x + 5) <0
4 - x - 2,5 <0
-x< -1,5 /: (-1)
x< 1,5
a) 2 |1-x| > 4
2*(1+x) > 4
2+2x > 4
2x > 2
x > 1
b) 4 - 1/2|2x+5|≤0
4 - 2x+5/2 ≤ 0
4 - 2x + 5 ≤ 0
-2x ≤ - 9
x > 4,5
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2 * (1 + x) >4 = 2 + 2x >4 = 2x> 4-2 2x>2/:2 x>1
b) 4 - 1/2 (2x + 5) <0
4 - x - 2,5 <0
-x< -1,5 /: (-1)
x< 1,5
a) 2 |1-x| > 4
2*(1+x) > 4
2+2x > 4
2x > 2
x > 1
b) 4 - 1/2|2x+5|≤0
4 - 2x+5/2 ≤ 0
4 - 2x + 5 ≤ 0
-2x ≤ - 9
x > 4,5