How did you slove the problem and what's the answer

 b) 2x² - 5x - 3

Step-by-step explanation:

Distribute each term in the first parenthesis into the second term and then add like terms.

  (2x + 1)(x - 3)

= 2x(x - 3)    +   1(x - 3)

= 2x² - 6x    +    x - 3

= 2x²        - 5x      - 3

the answer would be c:   ax + b = ax + c

step-by-step explanation:

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: