SOLUTION: Evaluate each function for the value specified. f(x) = x2 -7x + 10; find (a) f (0), (b)f(5),and(c)f(-2). the X2 above is an X and a little 2 a little hight than the X (to the

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Question 100570: Evaluate each function for the value specified.
f(x) = x2 -7x + 10; find (a) f (0), (b)f(5),and(c)f(-2).
the X2 above is an X and a little 2 a little hight than the X (to the root of 2) i think it means?? Help me please?
Answer by bucky(2189) (Show Source):
You can put this solution on YOUR website!
Before we start you need to know the meaning of .
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The 2 is called an exponent and it tells you how many times to multiply x times itself.
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So and and and so on.
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Now to the problem.
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You are given:
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and you are first asked to find f(0). All that means is that you start with the function you
are given and wherever you see an x you substitute zero. Then you evaluate the function:
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so start with:
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then substitute zero for into all the x terms to get:
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but note that and . When you substitute these values you
are left with:
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so the answer is:
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Next, you are to find f(5). Start with:
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and wherever you see an x, substitute 5. When you do you get:
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but and . Substitute these values into the equation and
you get:
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combine these three terms and you get 0. So the answer becomes:
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Finally, you are to find f(-2). Start with:
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and substitute -2 for x to get:
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Note that and . Substitute these values
and you have:
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so the answer is:
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Hope this helps you to understand the equation as well as what the exponents mean.
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