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Question

Let the values of x which satisfy the inequalities x23x+2>0 and x23x40 be [m,n)(p,q].Find m+n+p+q ?

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Solution

x23x+2>0 and x23x+20
(x1)(x2)>0x<1,x>2 ...(1)
and (x+1)(x4)01x4. ...(2)
Thus from (1) and (2), x[1,1)(2,4].

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