SOLUTION: beginning algebra book I have to evaluate this equation, but don't undersand it all please help me f(x)=x2-7x+10:find (a)f(0),(b)f(5)and (c)f(-2).

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Question 46579: beginning algebra book

I have to evaluate this equation, but don't undersand it all please help me
f(x)=x2-7x+10:find (a)f(0),(b)f(5)and (c)f(-2).
Found 2 solutions by Nate, tutorcecilia:
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = x^2 - 7x + 10
f(0) = 0^2 - 7(0) + 10 = 10
f(5) = 5^2 - 7(5) + 10 = 25 - 35 + 10 = 0
f(-2) = (-2)^2 - 7(-2) + 10 = 4 + 14 + 10 = 28

Answer by tutorcecilia(2144) About Me  (Show Source):
You can put this solution on YOUR website!
I have to evaluate this equation, but don't undersand it all please help me
f(x)=x^2-7x+10 [Substitute each value of x into the equation and solve]
.
(a)f(0) =%28%280%29%5E2-7%280%29%2B10%29 = 0-0+10 =10
.
(b)f(5)=%28%285%29%5E2-7%285%29%2B10%29 = 25-35+10 = 0
.
(c)f(-2)= %28%28-2%29%5E2-7%28-2%29%2B10%29= 4+14+10 = 28