what is factor theorem
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the factor theorem is a theorem linking factors and zeros of a polynomial. It is a special case of the polynomial remainder theorem.
f(x)=2x-6
x=3
which is 2*3-6=0
f(x)=2x-6
x=3
which is 2*3-6=0
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☛ Factor Theorem ;
If p ( x ) is a polynomial of degree ≥ one and a is any real number , then
( i ) ( x - a ) is a factor of p ( x ) , if p ( a ) = 0.
( ii ) p ( a ) = 0, if ( x - a ) is a factor of p (x).
☛ Remainder Theorem ;
Division and Algorithm for polynomials : If p(x) and g(x) are two polynomials with g(x) ≠ 0, then we can find q ( x ) and r (x) and such that
p ( x ) = g ( x ) * q ( x ) + r ( x ), where
r (x) = 0 (or) deg r(x) < deg g(x)
Dividend = Divisor × quotient + remainder
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