I need to use then equal value method on y=3x-17 and -2x+2y=-18 and I need help converting -2x+2y=-18 so it works

x = 4 ; y = -5

Step-by-step explanation:

we have to bring -2x in the right side of equal. To do this we have to change the sign of its coefficient

2y = 2x - 18

now we have to divide the two members by two

y = x - 9

now we can proceed

3x -17 = x-9

2x = 8

x = 4

now we can take one of the two expression and sobstitute x with 4 , so we can find y

y = 4 - 9

y = -5

B only

Step-by-step explanation:

well to solve this question we can consider factor theorem which states that if a Polynomial f(x) is divided by a monomial x-a then x-a is a factor of f(x) if and only if f(a)=0

and to figure "a " we can consider the following equation:

substitute the given value of a:

therefore,

plugin the value of x to the function A(x):

simplify which yields:

since A(2)≠0 x-2 is not a factor of A(x)

similarly substitute the value of x to the function B(x) which yields:

simplify:

so, B(2)=0 Hence x-2 is a factor of x³-x-6

substitute the value of x to the function C(x)

simplify:

as C(2)≠0 x-2 is not a factor of C(x)

likewise plugin the value of x to the function D(x):

simplify and that yields:

therefore,D(2)≠0 hence,x-2 isn't a factor of D(-2)