x2-7x+122x2+9x-5 < 0. Find the range of x.
Explanation:
x2-7x+122x2+9x-5 < 0
⇒ (x-3)(x-4)(2x-1)(x+5) < 0
Critical points are -5, ½, 3 and 4
∴ x ∈ (-5, ½) ∪ (3, 4)
Hence, option (a).
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