Question

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

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Answer 1

Yes, as we take x as a common term

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Answer 2

Answer:

step 1

put diviser =0

7+3x=0

3x=-1

x= -7/3

step 2

let p(x)=3x³+7x

putting x= -7/3

p(-7/3)=3(-7/3)³= 7(-7/3)

= -3(7³/3³) -49/3

=343/9 -49/3

= -343-49(3)/ 9

= -343 -147/9

= -590/9

thus reminder= p(-7/3)=-590/9

since remainder is not 0

thus 7+3x is not a factor 3x³+7x