Find the value of a and b so that (x+1) and (x-2) are factors of x^3+ax^2+2x+b.
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a= -5, b=8 put x= -1 and 2 get two equation and solve it
Exedutor:
ok
since x+1 and x-2 is factor we get x=-1 and x=2
put this in equation then u get 2 equations and solve it
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