Chech whether7+3x is a factor of 3x3+7x
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by factors theorem
let 7+3x=0
or 3x=-7
or x=-7/3
putting value of x in 3x3+7x gets =0
then 7+3x is factor of 3x3+7x
9+7x
or,9+(-49/3) which is not equal to zero there fore 7+3x is not the factor of given expression
let 7+3x=0
or 3x=-7
or x=-7/3
putting value of x in 3x3+7x gets =0
then 7+3x is factor of 3x3+7x
9+7x
or,9+(-49/3) which is not equal to zero there fore 7+3x is not the factor of given expression
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