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Crazy boy [7]
3 years ago
8

I want answer to this question

Mathematics
2 answers:
dem82 [27]3 years ago
6 0

Answer:

a=1 D

Step-by-step explanation:

insert x=1 in the equation

Mashcka [7]3 years ago
3 0

Answer:

When it is divided by x-1 and it has no remainder , then it means substituting x=1 into the polynomial is zero .Because x-1 is a factor.

2 {x}^{3}  - a {x}^{2}  - 7x + 6 \\ x = 1 \\ 2 {(1)}^{3}  - a {(1)}^{2}  - 7(1) + 6 = 0 \\ 2 - a - 7  + 6 = 0 \\ 1 - a = 0 \\ a = 1

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