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Ymorist [56]
3 years ago
7

F(x) =2x + 5 and g(x)=5, find(fg)(x)

Mathematics
1 answer:
irakobra [83]3 years ago
5 0

Answer: C) 10x + 25

<u>Step-by-step explanation:</u>

f(x) = <u> 2x + 5 </u>,  g(x) = <u> 5 </u>

(fg)(x) = (2x + 5) * 5

         = 10x + 25

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Solving the equation created by substitution listed in the question:

-2x+14=x²-3x+12

Add 2x to both sides:
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Subtract 14 from both sides:
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Factoring this, we want factors of -2 that sum to -1; -2(1) = -2 and -2+1=-1:
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Using the zero product property, we know that either x-2=0 or x+1=0:
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