kokokakahi
03.12.2019 •
Mathematics
Add or subtract
x/x^2-4 -2/x^2-4
Solved
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Ответ:
Simplify the expression.
−8x^2-x-4/x^2
That dash is for fraction
Ответ:
x2 + 2x + 1 + y2 - 4y + 4 = 20 + 1 + 4
(x+1)2 + (y-2)2 = 25
therefore r= 5
c (-1, 2)