Which expression is a linear factor of x ^6 + x - 66? x + 1 x + 2 x + 4 none of the above

None of the above

Step-by-step explanation:

We are given that an expression

We have to find which expression is a linear factor of given expression.

1.

Factor theorem: if x+a is factor of polynomial  P(x) then

P(a)=0=Remainder .

If p(a)=0 then x+a is a factor of p(x)

By factor theorem

Hence, x+1 is not  a linear factor of given expression.

2.

By factor theorem

Hence, x+2 is not a linear factor of given expression.

3.x+4

By factor theorem

Hence, x+4 is not a linear factor of given expression.

None of the above

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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