Question

Rezolva inecuatiile : a) x(x+2)-x ² mai mic sau egal cu 4 ,x€R
b) x√2+1 c) 0,(3)x+1 mai mare sau egal cu 0,2(3)x,x€R

Answer 1

X'+2x-x'<4(x' se reduce cu -x')

2x<4|:2

x<2 x€R

b) xradical2=-1|:radical din 2

X=radical 2

c) 3/9x>0,2(3)|3/9

x>23/90×3/9

X>23/90×1/3