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2014-05-15T23:17:09+03:00
1)2x√3-4√3≤2x-4
2x√3-2x≤4√3-4
2x(√3-1)≤4(√3-1)
x≤[4(√3-1)]/2(√3-1)
x≤2
x∈[2,+α)
2)3x²/9=27/256
3·256x²=9·256
768x²=243
x²=243/768simplificam cu 3
x²=81/256
X1=√81/√256=9/16=0,5625
X2=-√81/√256=-9/16
S={-9/16, 9/16}

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