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royalbugg
17.04.2020 •
Mathematics
Which functions have a maximum value greater than the maximum of the function g(x) = –(x + 3)^2 – 4?
Check all that apply.
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Ответ:
B) x^2 – 1
Step-by-step explanation:
x(x – 1)(y + 1)
FOIL (x-1)(y+1)
firsy: xy
outer 1x
inner -1y
last (1)(-1) =-1
Add them together xy +x-y-1
x( xy +x-y-1)
Replace xy with 1
x( 1+x-y-1)
x(+x-y)
Distribute
x^2-xy
But xy=1
x^2 -1