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ASHA 777 [7]
3 years ago
9

Which equation is y = 3(x – 2)2 – (x – 5)2 rewritten in vertex form?

Mathematics
1 answer:
Alenkinab [10]3 years ago
4 0
Y= 3( x -2 )² - ( x-5 )² = 3 ( x² - 4 x + 4 ) - ( x² - 10 x + 25 ) =
= 3 x² - 12 x + 12 - x² + 10 x - 25=
= 2 x² - 2 x - 13 =
= 2 ( x² - x + 1/4 - 1/4 ) - 13 =
= 2 ( x - 1/2 )² - 1/2 - 26/2 =  2 ( x - 1/2 )² - 27/2
Answer: D) 
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