1.

Check 7 + 3x is a factor of 3 x cube + 7 x

Answer»

Answer:

Step-by-step explanation:

CHECK whether 7 + 3x is a FACTOR of 3x3 + 7x

Solution: Apply REMAINDER theorem

=>7 + 3x =0

=> 3x = - 7

=> X = - 7/3

Replace x by - 7/3 we get

=>3x3 + 7x

=>3(-7/3)3 + 7(-7/3)

=>3(-343/27) – 49/3

=> (-343/9) – 49/3

This value is not equal to 0

So that 7 + 3x is not a factor of expression 3x3 + 7x


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