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a
(−∞, 2)∪(3, ∞)
b
(2, 3)
c
R
d
ϕ
answer is D.
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Detailed Solution
x−5x+5≥0 , 2−x2+x≥0 (x−5)(x+5)≥0 and x≠-5 ; (2−x)(2+x)≥0 and x≠-2 ⇒ x-2x+2≤0⇒x∈(−∞,−5)∪[5,∞); x∈(−2,2]Domain=ϕ ( since the intersection of the two functions domains is φ)