lizisapenguin
20.09.2020 •
Mathematics
What is the reflection of (x, -y) across the y-axis.
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Ответ:
(x, -y) —> (-x, -y)
Ответ:
Step 2: (x + 4)(x + 2) = 8
Step-by-step explanation:
x2 + 6x + 8 = 0
x2 + 4x + 2x + 8 = 0
x(x + 4) + 2(x + 4) = 0
(x + 2)(x + 4) = 0