Quadratic equations w complex roots
x2 - 6x + 12 = 0
1 answer:
Answer:
x = 3 ± i 
Step-by-step explanation:
Given
x² - 6x + 12 = 0 ( subtract 12 from both sides )
x² - 6x = - 12
Using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 3)x + 9 = - 12 + 9
(x - 3)² = - 3 ( take the square root of both sides )
x - 3 = ± 
= ± i ( add 3 to both sides )
x = 3 ± i
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The coordinates of the midpoint of line segment AB:
subtitute
There ya go! Hope this helped
Answer:
34.5
Step-by-step explanation:
Add up all the numbers. 10+8+6+5=29. Then divide 29 by 100. Then multiply 10x What you got from 100/29. Sorry if thats confusing hope that helps!
-90 = -100 + x
To solve for X, you need to isolate it ( get it by itself).
Add 100 to each side:
-90 + 100 = -100 + x + 100
Simplify:
10 = x
X = 10
Answer:
- 15+2n
- 6(x-3)
Step-by-step explanation:
- 8m+4n+7n-2n
- 8m+7n+4n-2n
- 15n+2n
- 3(2x-6)
- 3 multipied by 2x and 6= 6x-18
- The GCF(greatest common factor)is 6
- 6x divided by 6 is x and 18 divided by 6 is 3
so the GCF goes outside the parenthesis and the numbers you got after you divided goes inside. 6(x-3)
Hope this helps!
