guko
09.01.2021 •
Mathematics
Convert y = 9x2 + 108x - 72 to vertex form by completing the square. Choose the correct equation. Show each step for full credit.
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Ответ:
Putting the like terms together;
-4x-3x-7+4=25
On simplifying;
-7x-3=25
-7x=28
x=-4