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x1+x2 = -p
x1- x2 = -1 (-)
2x2 = 1-p
x2 = (1-p)/2
x1.x2 + x2 = q+2
q + x2 = q+2
x2 = 2............maka p = -3 , x1 = 1 , q = x1.x2
q = 1.2
q = 2
p+q = -3+2
= -1..............opsi C