Check whether 7+3x is a factor of 3x³ +7x.( please help me )
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Answer:
7+3x=0
3x=-7
x= -7/3
p(x)= 3x^3+ 7x
p(-7/3) = 3* (-7/3)^3+7* -7/3
= -55.44 which is not equal to zero. so 7+3x is not the factor of given polynomial
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