A. Always because imagine a line where one is y=x and the other is y=-x+1. The point of intersection would be (1,1)
P = a + b + c for a
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<span>x^2+4x-1/(x+2)^2=0
x^2 + 4x - 1 = 0
</span>
;
where a = 1, b = 4 and c = -1
x^2 + 4x - 1 = 0
</span>
where a = 1, b = 4 and c = -1