solve for x: x-1 / x+3 ≥ 0
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x+3 ≥
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Answer:
x= [-∞,-3) U [1,∞]
Step-by-step explanation:
numerator: x-1=0
x=1
denominator: x+3=0
x= -3
If x= 1
(1)-1/(1)+3 ≥0
0/4≥0 x=1 is part of the solution
if x= -3
(-3)-1/(-3)+3≥0
-4/0≥0 x= -3 is not part of the solution because it will become undefined since the denominator is ZERO