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gamboaserg
26.07.2019 •
Mathematics
Solve x2 + 6x + 10 = 0 using the quadratic formula. what is the solution set?
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Ответ:
x = -3 + 1i and x = -3 - 1i
Step-by-step explanation:With the problem: x² + 6x + 10 = 0
So using the formula: ax² + bx + c = 0
We narrow it to: a = 1, b = 6, c = 10
Discriminant: D = b² − 4ac (negative) or D = 36 − 40 = −4 (positive)
Formula: x= −b±√D / 2a
x= −6±√−4 / −2 = −3 ± i [i2=−1]
Therefore, your answer is:
x = -3 + 1i and x = -3 - 1i
(or x = -3 ± 1i)
*the "1" in front isn't necessary but it helps!*
Hope this helps!
- Shad -
Ответ:
B & D
Step-by-step explanation:
Make sure they are correct