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Old 02-09-2009, 01:55 AM   #1
Redster
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Here's one more



math question that is

x*x + 2x - 35 = 0

x=..?
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Old 02-09-2009, 01:59 AM   #2
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pssshhtt, x*x=35-2x..... that's all I got. What's step 2 =P
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Old 02-09-2009, 02:01 AM   #3
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Damn I remember there were like 3 different ways of finding x, but i seriously can't remember this crap.
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Old 02-09-2009, 02:04 AM   #4
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x=5
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Old 02-09-2009, 02:05 AM   #5
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Can you run over the steps for me please.
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Old 02-09-2009, 02:45 AM   #6
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In all honesty, i don't recall how to solve these puzzles. I'm too old to remember brain numbing questions. I just substituted to get the answer.

x*x + 2x - 35 = 0
x*x + 2x = 35
substitute with 5 to solve
5*5 + 2(5) =35
25 + 10 = 35
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Old 02-09-2009, 03:02 AM   #7
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x=5 and -7
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Old 02-09-2009, 04:52 AM   #8
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get into polynomial form....x^2 + 2x -35 = 0
factor it out.... (x-5)(x+7)
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Old 02-09-2009, 09:58 AM   #9
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holy shit people in canada know math... i guess this was just an eastern european myth
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Old 02-09-2009, 10:57 AM   #10
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(1)x*x + (2)x + (-35) = 0
a = 1
b = 2
c = -35

(-b +/- d)/2a
d*d = b*b - 4ac
x = -5, 7
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Old 02-09-2009, 12:00 PM   #11
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Come on make it a lil more interesting...

Solve this equation :
[3.(x - 1)]/2 + [2(x + 2)]/4 = (3x + 4.5)/5
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Old 02-09-2009, 12:16 PM   #12
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Quote:
Originally Posted by slemmer View Post
In all honesty, i don't recall how to solve these puzzles. I'm too old to remember brain numbing questions. I just substituted to get the answer.

x*x + 2x - 35 = 0
x*x + 2x = 35
substitute with 5 to solve
5*5 + 2(5) =35
25 + 10 = 35
stop doing his homework for him!!!!
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Old 02-09-2009, 12:40 PM   #13
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I hate this thread!

Math is the spawn of satan!!
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Old 02-09-2009, 12:44 PM   #14
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Quote:
Originally Posted by someguy View Post
get into polynomial form....x^2 + 2x -35 = 0
factor it out.... (x-5)(x+7)
is how I figured it out.
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Old 02-09-2009, 01:18 PM   #15
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Ok, how about one word problem..

One day, a person went to horse racing area, instead of counting the number of human and horses, he instead counted 74 heads and 196 legs. Yet he knew the number of humans and horses there. How did he do it, and how many humans and horses are there? SHOW WORK
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