If all the equations x^2+p x+10=0, x^2+q...

If all the equations `x^2+p x+10=0, x^2+q x+8=0 and x^2+(2p+3q)x+60=0,` where `p,q in R` have a common root, then the value of `(p-q)` can be (i) `-1` (ii)`0` (iii)`1` (iv)`2`

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