If the HCF of the polynomials f(x) = (x+3) (2x2
-3x+a)
and g(x) = (x-2) (3x2+10x-b) is (x+3) (x-2), then the values
of a and b are respectively
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Concept
HCF is the largest positive integer that can divides each of the integers. Full form of HCF is highest common factor.
Given
Polynomials f(x)=(x+3)( and g(x)=(x-2)( and HCF of both the polynomials is (x+3)(x-2)
To find
The values of a and b.
Explanation
We know that HCF divides both the numbers fully means the value of remainder must be 0.
HCF=(x+3)(x-2)
f(x)/HCF=
Dividing we get :
=(x-2)*(2x+1)(a+2)
means a+2 is remainder so when we put a+2=0, we will get a=-2
g(x)/HCF=
Dividing we get:
=(x+3)*(3x+1)+(-b-3)
means (-b-3) is the remainder so when we put -b-3=0, we will get b=-3.
Hence the value of a=-2 and b=-3 if HCF of f(x)=(x+3)( and g(x)=(x-2)( is (x+3)(x-2).
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