SOLUTION: Find (f - h)(-3) if f(x) = (x + 1)^2; D = {Reals}, and h(x) = x; D = {Integers}

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Find (f - h)(-3) if f(x) = (x + 1)^2; D = {Reals}, and h(x) = x; D = {Integers}      Log On


   

Question 67781This question is from textbook An Incremental Development
: Find
(f - h)(-3) if f(x) = (x + 1)^2; D = {Reals}, and h(x) = x; D = {Integers} This question is from textbook An Incremental Development

Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
If f(x)=(x+1)^2, than f(-3)=(-3+1)^2=(-2)^2=4 and
If h(x)=x, than h(-3) = -3
So, (f-h)(-3)=4-(-3)=7
.
Another method is:
f(x)-h(x) or (x+1)^2-x
(-3+1)^2-(-3) [substitute (-3) for x and solve]
(-2)^2-(-3)
4+3
7