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Question
Submitted by kj52freak on Thu, 2012-01-19 23:26
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x2 + 30x + 198 = 0

x2 + 30x + 198 = 0

Answer
Submitted by shahimermaid on Fri, 2012-01-20 07:45
teacher rated 381 times
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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 philablue on Fri, 2012-01-20 03:31
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price: $1.00

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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