If p+q = 4 q+r = -2 r+p=3 then p+q+r =?
Correct answer B. 5?2
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See allIf x = (p+q)/(p-q) then x-1 =?
Correct answer D. 2q/(p-q)
If 12/m = 15/m2 then m =
Correct answer A. 5?4
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(x+y)2 – (x-y)2 =
Correct answer D. 4xy
(p2-q2) / (p+q) = 50 then p-q =?
Correct answer D. 50
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