mathss

[15goddess15]

A4. Jenny had to solve x� - 4x = 0
She wrote:
x� - 4x = 0
� x� = 4x
� x = 4
why was her answer not accepted ????

[craft1948]

what a curious post in CB....although I'm sure some may rise to the challenge.....

[ummmm]

Maybe because it's wrong....just a thought.

[sara3]

yeah, it looks wrong to me.

[ginvodka]

Cause Jenny got it wrong :)

[stewey]

Obviously x equals 4, but I don't know how to prove it in 'writing'.

[ummmm]

Stewey....stop trying to act clever :-)

[craft1948]

as I only managed 17% in my 'O' Level prelims I think I'll sit this one out......

[whifffey]

plus or minus 4

[whifffey]

.... is also wrong!!! LOL

[sara3]

I have to agree that is x is 4.

and I can spell maths.

[roslyn251254]

You can't just cancel out the x because x could be equal to 0 as well as 4.

[stewey]

An interesting difference in words. In Canada and the US we call the subject 'math'......without the 's'.

[sara3]

then perhaps 15goddess15 comes from somewhere where they call it mathss.

[Mc'knobby]

y

[sara3]

because I said so!

[stewey]

When I went to school, many moons ago, they were always asking us to find x................they haven't found it yet??!!

[sara3]

here it is x ←