Question

Which values of P and Q result in an equation with exactly one solution?
Px + 50 = −2x + Q

(select all that apply)
a)P = 2P and Q = −2
b)P = −2P and Q= −50
c)P = −2P and Q = 50
d)P = 50 and Q = 50

Answer 1

I believe the answer is- D!



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Answer 2

Equation has only one solution if variable x is in that equation. So P ≠ -2 and answers are a and d (here Q is not important).