Question

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

Answer 1

Answer:

let f(x)=3x+7x

7+3x=0

x=-7/3

f(-7/3)=

3(-7/3)+7(-7/3)

-7+-47/3

-61/3

therefore,7+3x is not a factor of 3x+7x

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Answer 2

Answer:

I can help you with it bcoz today is my maths exam

Explanation:

p(x)=3x^3+7x

7+3x=0

3x=-7

x=-7/3

putting x=-7/3 in p(x)

p(-7/3)=3×(-7/3)^3+7×-7/3

=3×-343/27-49/3

=343/9-49/3

=-343-147/9

=-490/9

That is not a factor of given equation