Question

check whether 7x+3x is a factor of 3x²+7x

Answer 1

Given g(x) = 7x + 3x.

Given f(x) = 3x^2 + 7x.

By remainder theorem, we get

= > 7x + 3x = 0

= > 10x = 0

= > x = 0.

Your question seems to be wrong

Answer 2

no
$3 {x}^{2} + 7x \\ x \: is \: taken \: as \: common \\ = x(3x + 7)$
so therefore 3x+7x is not the factor of 3x^2+7.
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