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If the curves y = x3 + ax and y = bx2 + c pass through the point (–1, 0) and have a common tangent line at this point, then the value of

a + b + c is


You have the two curves and you know a point on them substitute the point (-1,0) in both of them. You get a=-1 and b+c=0 add both of them you have a+b+c=-1
0 0 0
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