Question
Mathematics Question on Relations and functions
x∈R:x3+4x2+3x2x−1∈R Equals
A
R - {0}
B
R- {0,1,3}
C
R-{0, -1,-3}
D
R- 0,-1,-3,+ 21
Answer
R-{0, -1,-3}
Explanation
Solution
Let A=x∈R:x3+4x2+3x2x−1 Now , x3+4x2+3x=x(x2+4x+3) =x(x+3)(x+1) A=R−0,−1,−3