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Check whether 7 + 3x is a factor of 3x + 7x.
Answers
Answer:
(7 + 3x) is not a factor of (3x³ + 7x).
Step-by-step explanation:
Let f(x) = 3x³ + 7x……….(1)
Zero of 7 + 3 x is x = - 7/3
Now to check whether (7 + 3x) the polynomial is a factor of 3x³ + 7x, we prove that, f(–7/3) = 0, by using remainder theorem ,
On putting x = - 7/3 in eq 1,
f(–7/3) = 3(–7/3)³ + 7 (–7/3)
f(–7/3) = 3(-343/27) – (49/3)
f(–7/3) = (-343/9) – (49/3)
f(–7/3) = (-343 × 3 – 49 × 9)/27
f(–7/3) = (- 1029 - 441)/27
f(–7/3) = - 1470 /27
f(–7/3) = - 490/9
Hence, (7 + 3x) is not a factor of (3x³ + 7x).
HOPE THIS ANSWER WILL HELP YOU…
Answer:
hello here is ur answer reyan
Step-by-step explanation:
(7 + 3x) is not a factor of (3x³ + 7x).
Step-by-step explanation:
Let f(x) = 3x³ + 7x……….(1)
Zero of 7 + 3 x is x = - 7/3
Now to check whether (7 + 3x) the polynomial is a factor of 3x³ + 7x, we prove that, f(–7/3) = 0, by using remainder theorem ,
On putting x = - 7/3 in eq 1,
f(–7/3) = 3(–7/3)³ + 7 (–7/3)
f(–7/3) = 3(-343/27) – (49/3)
f(–7/3) = (-343/9) – (49/3)
f(–7/3) = (-343 × 3 – 49 × 9)/27
f(–7/3) = (- 1029 - 441)/27
f(–7/3) = - 1470 /27
f(–7/3) = - 490/9
Hence, (7 + 3x) is not a factor of (3x³ + 7x).
HOPE THIS ANSWER WILL HELP YOU…