Question

3. Check whether 7 + 3x is a factor of 3x3 + 7x.​

Answer 1

Step-by-step explanation:

Apply remainder theorem

=>7 + 3x =0

=> 3x = - 7

=> x = - 7/3

Replace x by - 7/3 we get

=>3x*3+ 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 3x*3+ 7x

Answer 2

Answer:

to find whether a polynomial is the factor of another has many ways but substitution is the shortest and the most easiest way.

Step-by-step explanation:

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