ayoismeisalex
19.08.2020 •
Mathematics
What is the value of (-7 + 3i) - (2 - 6i)?
-5 + 91
-5 -3i
-9-31
-9 + 91
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Ответ:
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Real part with real part, complex part with complex part...
(-7 + 3i) - (2 - 6i)
(-7 + 3i) - (2 - 6i) = ((-7 - (+ 2)) + (3i - (- 6i))) = - 5
((-7 - 2) + (3i + 6i))
- 9 + 9iОтвет:
(x+2) (y + 3) = 0
(x + 2)(3) = 0
3x + 6 = 0
3x = -6
x = -2
The coordinates is (-2, 0)
When it intersection with the y-axis, x = 0
(0 + 2)(y + 3) - 0
2(y + 3) = 0
2y + 6 = 0
2y = -6
y = -3
The coordinate is (0, -3)