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a fost răspuns

Rezolvati Inecuatiile:
a) (x-2)x5+4>(3x+2)3-4
b) (x-5)(2x-5)-(2x-7)la puterea a 2<2(1-xla puterea a 2)

Răspuns :

a) (x-2)5+4>(3x+2)3-4
5x-10+4>9x+6-4
5x-6>9x+2
5x-9x>2+6
-4x>8
-x>8/4
-x>2 |*(-1)
x<-2
b)(x-5)(2x-5)-(2x-7)^2<2(1-x^2)
2x^2-5x-10x+25-(4x^2-28x+49)<2-2x^2
2x^2-15x+25-4x^2+28x-49<2-2x^2
2x^2+13x-24-4x^2<2-2x^2
2x^2+2x^2+13x-4x^2<2-24
4x^2+13x-4x^2<-22
13x<-22
x<-22/13

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