Product of (n+7) exponent 2

n^2 +14n +49

Step-by-step explanation:

(n+7)^2

(n+7) (n+7)

FOIL

first = n*n

outer = n*7

inner = 7*n

last 7*7 =49

Add them together

n^2 +7n+7n+49

Combine like terms

n^2 +14n +49

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: