a)41x+2>-2-13x b)-14x>2+(3x-1) c)3x-4(x-1)>-2(x-1) d)(2x+2)do kwadratu >4x do kwadratu +12
a)41x+2>-2-13x54x > -4 /:54x > -2/27 b)-14x>2+(3x-1)-14x > 2 + 3x - 1-17x > 1 /:(-17)x < -1/17 c)3x-4(x-1)>-2(x-1)3x - 4x + 4 > -2x + 2x > -2
d)
(2x+2)^2 > 4x^2 +12
(2x+2)^2 - (4x^2) > 12
8x + 4 > 12
8x > 8 /:8
x > 1
^ - oznacza potęgę.
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a)
41x+2>-2-13x
54x > -4 /:54
x > -2/27
b)
-14x>2+(3x-1)
-14x > 2 + 3x - 1
-17x > 1 /:(-17)
x < -1/17
c)
3x-4(x-1)>-2(x-1)
3x - 4x + 4 > -2x + 2
x > -2
d)
(2x+2)^2 > 4x^2 +12
(2x+2)^2 - (4x^2) > 12
8x + 4 > 12
8x > 8 /:8
x > 1
^ - oznacza potęgę.