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Kay [80]
3 years ago
5

What are the possible values of x in x2 + 3x + 3 = 0?

Mathematics
2 answers:
In-s [12.5K]3 years ago
5 0
x^2 + 3x + 3 = 0 

Apply \ the \ Quadratic \ Formula 


Given \ the  \ general \ form \ ax^2+bx+c=0there \ exists \ two \ solutions \ where: a=1, b=3 \ and \ c=3 

x= \dfrac{-3+ \sqrt{3i}}{2}, \dfrac{-3- \sqrt{3i} }{2} 


stealth61 [152]3 years ago
3 0
Hello,

x^2+3x+3=0\\

\Delta=9-4*3=-3\\

x= \dfrac{-3-i*\sqrt{3}}{2} \ or\ x= \dfrac{-3+i*\sqrt{3}}{2} \\


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X^2 - 4x - 12 = 0 Factor and solve
maxonik [38]
Ax^2+bx+c=0

find what 2 numbers multiply to get c and add to get b
x^2-4x-12
b=-4
c=-12

x times y=-12
x+y=-4
factor -12
-1, 12
-2,6
-3,4
add
-1+12=11
-2+6=4
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the one that works is -2 and 6 because they can be reversed to make -6 and 2 which multiploy to get -12 and add to get -4 so 

split it up into

x^2-4x-12=(x-6)(x+2)=0
set each to zero
x-6=0
add 6
x=6

x+2=0
subtract 2
x=-2

x=6 or -2



7 0
3 years ago
Manuel exercises more than 50 minutes per day. Use t to represent Manuel's amount of exercise (in minutes per day).
Irina-Kira [14]

Answer:

t > 50

Step-by-step explanation:

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4 0
3 years ago
Help Help! Now help! ASAP!I’ll make you brainly now please
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Answer:

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3 0
3 years ago
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Zigmanuir [339]

Answer:

7 inches

Step-by-step explanation:

First you have to find the average height of each class.

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Same process for the 7th Grade.

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Step-by-step explanation:

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