X2+3xX-7 = 0
You need to think on a Number (X) and square that number, Add 3 then times by X and take seven away and you should get 0 as answer
But i cant find out what X is
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X2+3xX-7 = 0
You need to think on a Number (X) and square that number, Add 3 then times by X and take seven away and you should get 0 as answer
But i cant find out what X is
Is that advanced higher maths or something?Quote:
Originally Posted by Jake.
Not sure, just got it for homework
You might need a calculator :P
X = 4 i think
That comes to 69Quote:
Originally Posted by Dave//
mayeb not then, i am rubbish at maths ;P
1.55?
i'm not sure how u do x2+3x=7 yet..
im stuck there
Doesn't 3xx mean 3 times x times x again?Quote:
Originally Posted by Jake.
n if that's right ^^ It's somewhere between 1.24 and 1.25
I think its between 1.54 and 1.55
Thanks, Any1 know the 100% correct answer?
well if the question is X^2 +3x -7
then you should get two answers.
if you use the quadrac formula you get
-3+(square root of 37)
2
and
-3-(square root of 37)
2
Urgh, i found out that to find the 100% correct answer wont fit on any calculator that i could get hold of cause there is like 100000000 decimal places :S
-4 & 8x
- I think, because we're doing this at school at the moment.
Just but the number then the recurring sign then :rolleyes:Quote:
Originally Posted by Jake.
I'm doin' this in math at the moment. What year yoo in?
Year 10 :)Quote:
Originally Posted by Chaz-
I'm in year 9
I don't understand how you've written it?
Is it supposed to be:
((X*2) + (3*X)) * - 7 = 0
Or..
(X² + 3*x) * -7 = 0
Edit: Wait, or is it:
(X²+3) * X-7 = 0
Use computer calculator then.Quote:
Originally Posted by Jake.
5X = 7
1.4 isnt it?