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Question
Submitted by kj52freak on Fri, 2012-01-20 00:26
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x2 + 30x + 198 = 0

x2 + 30x + 198 = 0

Answer
Submitted by shahimermaid on Fri, 2012-01-20 08:45
teacher rated 224 times
4.42857
price: $1.00

find factors and split the middle term

body preview (37 words)

xxxxx is not possible in this case xx

xxxx xxxx

30^2 - x xx x xxxx xxx x xxx = 108

x x +/- sq rt xxxx

xxx x xxxxx

xxx xxxxxx

x xxxx have to value, -40.39 x -19.61


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Answer
Submitted by Shirsendu on Fri, 2012-01-20 13:30
teacher rated 52 times
3.673075
price: $1.00

-9.8,-20.2

body preview (92 words)

x^(2)+30x+198=0

xxx the quadratic formula xx find the xxxxxxxxxx xx this case, xxx values xxx a=1, b=30, xxx xxxxxx
xxxxxxxxxxxxxxxxxxxxxxxx xxxxx ax^(2)+bx+c=0

xxxxxxxxxx in the values of a=1, b=30, and xxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

xxxxxxxx the xxxxxxx inside the xxxxxxxx
x=(-30\6sqrt(3))/(2(1))

xxxxxxxx the xxxxxxxxxxx of the xxxxxxxxx formula.
x=(-30\6sqrt(3))/(2)

xxxxxxxx xxx xxxxxxxxxx to solve for xxx x portion xx xxx \.
x=-15+3sqrt(3)

xxxxxxxx the xxxxxxxxxx xx solve xxx xxx x xxxxxxx xx the \.
xxxxxxxxxxxxxx

xxx final answer xx the xxxxxxxxxxx xx both solutions.
xxxxxxxxxxxxxxxxxxxxxxxxxxxx
= -9.8,-20.2


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Answer
Submitted by philablue on Fri, 2012-01-20 04:31
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answer

body preview (39 words)

xx in xxxx xxx xxxxxxx was xxxxxxxxxxxx
x(2+30)+198=0 <=>
32x+198=0 <=>
xxxxxxxx xx xx -198/32 => x=-6.18

2) xx xxxx xxxx problem xxx xxx x 30x xxxxxx
D=b^2-4ac =>
xxxxxxxxxxxx xx xxxxx

xxx => E x1,x2

xxxxxxxxxxxxxxxxxx
x2=(-30-sqrt108)/2


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