2x2−x<0.<br>
2x2−x=0
x(2x−1)=0()
x=0 or 2x−1=0
x=0 or x=12
x<0<br>
0
x>12
Answer:
0ХЭ(0;12)
x2+3x<0<br>
x2+3x=0
x(x+3)=0
x=0 or x+3=0
x=0 or x=−3
Check intervals in between critical points. (Test values in the intervals to see if they work.)
x<−3<br>
−3
x>0(
Answer:
−3ХЭ(-3;0)