If (x−3)is a factor of x^3+ax^2+bx+18 and a+b=−7find a and b
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what is that answer 20 that is the answer
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1
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3 will satisfy the given equation.
By substituting the value of 3 in above eqn we get,
27+9a+3b+18=0
3a+b=-15
Given,
a+b=-7
2a=-8
a=-4
b=-3
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