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avanturin [10]
3 years ago
13

Quadratic equation x2+x+9=0

Mathematics
2 answers:
wolverine [178]3 years ago
8 0

Answer:

x= -1+- i√35/2(looks weird so I'll include an image)

Step-by-step explanation:

depends on what you wanted to do with this equation, but I'm going to assume you wanted to factor this.

(-b+- √b^2-4ac)/(2a)=

-1+- √1- 4(1)(9)/ 2=

-1+- √1- 36/ 2=

x= -1+- i√35/2

amid [387]3 years ago
5 0

Answer:

2x+11

Step-by-step explanation:

because x+x=2x

2+9=11

Equation: 2x+11

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larisa86 [58]
The formula for determining the apothem of regular hexagon is s/2tan(180/n) , where 's' is any side length of regular hexagon and 'n' is the number of sides of regular hexagon.
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Evaluate 5a+3b and (5+a)(3+b) for a=2 and b=4. How is the order of the steps different for the two expressions?
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10+12
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(5+a)(3+b)
(5+2)(3+4)
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49

The order of the steps differ for the two expressions because for the first expression, you multiply 5a and 3b first. Then, you add them together. However, for the second expression, you add what's inside the parenthesis first then multiply them. So, the order of the steps is the opposite of the other expression. 
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What is equivalent to 3 2/5?
ad-work [718]

Answer:

85/25

Step-by-step explanation:

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