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2 Comments Already

mygif
sheldonlinker Said,
February 5th, 2011 @7:52 am  

The solution to anything of the form ax²+bx+c=0 is

-b±?(b²-4ac)
—————–
2a

So, in the first problem, a=4, b=3, and c=-8

mygif
como Said,
February 5th, 2011 @8:49 am  

Question 1
4x² + 3x – 8 = 0
x = [ - 3 ± ? (9 + 128 ) ] / 8
x = [ - 3 ± ? (137) ] / 8
x = -1.84 , x = 1.09

Question 2
9x² + 30x – 29 = 0
x = [ - 30 ± ? (900 + 1044 ) ] / 18
x = [ - 30 ± 44.1 ] / 18
x = 0.783 , x = – 4.12

Question 3
?145 = 12.04

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