-212
-112
112
212
Correct answer is B
p = 12;1p−1=2p+x
112−1=212+x
11−22=21+2x2
1−12=21+2x2
-2 = 41+2x−2(1+2x)=4
1 + 2x = 4−2
1 + 2x = -2
2x = -2 - 1
2x = -3
x = -32
x = -112
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