Evaluate x+(x^2-xy)-y if x=8 and y=5

27

Step-by-step explanation:

8+(8^2-8*5)-5

8+64-40-5

72-45

27

27

Step-by-step explanation:

8 + [8^2- (8x5)] -5

=27

ege

step-by-step explanation:

egge

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: