Register
X^3+3x^2+kx-10 and x-1 is a factor what is k
141k views
0 votes
X^3+3x^2+kx-10 and x-1 is a factor what is k

User Klaus Ertl
by
8.0k points

1 Answer

2 votes

Answer:

6

Explanation:

Using the factor theorem, the expression evaluated at
x=1 will equal
0.


1^3+3(1^2)+k(1)-10=0 \\ \\ 1+3+k-10=0 \\ \\ k=6

User Ennael
by
7.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.8m questions

11.4m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!