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erik [133]
3 years ago
15

Consider the function f(x)=2x^2-8x+5.

Mathematics
1 answer:
GarryVolchara [31]3 years ago
6 0
This is called completing the square. 


f(x) = 2x^2 - 8x + 5 
<span>
f(x) = 2(x^2 - 4x) + 5 </span>
<span>
f(x) = 2[(x-2)^2 - 4] + 5 </span>
<span>
f(x) = 2(x-2)^2 - 8 + 5 </span>
<span>
f(x) = 2(x-2)^2 - 3 </span>


f(x) is at a minimum when (x-2) = 0, therefore x = 2 
<span>
f(2) = 2(2-2)^2 - 3 </span>
<span>
f(2) = -3


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

</span>
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