Question

5 - x ≤ 12

3 ( 2 - 5 X ) ≥ 18 - 12 X

4 X - 2 ( X - 3 ) ≥ 0

5 X - 2 ( X + 3 ) ≤ X

( X - 1 ) - 7 > ( X - 2 )²

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Answer 1

A) 7 menor o igual que X
B) 6-15X<18-12X
6-18<3X
6<3X
2<X
C) 4X-2(x-3)>0
4x-2x+6>0
2x+6>0
x>3
D)5x-2(x+3)<X
5x-2x-6<X
3x<6
x<2
E) (x-1)-7>(x-2)^2
x-1-7>x^2-2x2+2^2
x-8>x^2-4x+4
0>x^2-3x+12
x= no tiene porque son complejos
x=no tiene