Question

check whether 7 + 3 X is factor of 3 x cube + 7 x​

Answer 1

Explanation:

p(x) = 3x³ + 7x

g(x) = 7 + 3x

g(x) = 0

7 + 3x = 0

3x = -7

x = -7

put x in p(x)

p(-7/3) = 3(-7/3)³ + 7(-7/3)

= 3(-343/27) - 49/3

= -343/7 - 49/3

= (-1029 - 343)/21

= -1372/21

p(x) ≠ 0

so. 7 + 3x is not a factor of 3x³ + 7x

Answer 2

Explanation:

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