please help me this question is a not solve from me class 9th chapter name polynomial
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Answered by
1
Answer:
this type questions are very simple you just need to put the value of x and if it is giving zero, it is the factor
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Answered by
1
Answer:
i)
Step-by-step explanation:
x + 1
x = -1
i) x3 + x2 + x + 1
(-1)3 + (-1)2 + (-1) + 1
(-1) + 1 + (-1) + 1
- 1 + 1 - 1 + 1
= 0
therefore x+1 is a factor of the polynomial
ii) x4 + x3 + x2 + x + 1
(-1)4 + (-1)3 + (-1)2 + (-1) + 1
1 + (-1) + 1 + (-1) + 1
1 - 1 + 1 - 1 + 1
= 1
therefore x + 1 is not a factor of the polynomial
iii) x4 + 3x3 + 3x2 + x + 1
(-1)4 + 3(-1)3 + 3 (-1)2 + (-1) + 1
1 + 3 (-1) + 3 (1) + (-1) + 1
1 - 3 + 3 - 1 + 1
= 1
therefore x+ 1 is not a factor of the polynomial
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