Maths problem

[gary1]

I'm really stuck on this question, and would be incredibly grateful if anyone could help me:

^ = the square root

^5 + y = a rational number (ie a number which can be written as a/b)

can anybody find a value for y?

[MikeNewYork]

I'm really stuck on this question, and would be incredibly grateful if anyone could help me:

^ = the square root

^5 + y = a rational number (ie a number which can be written as a/b)

can anybody find a value for y?

I'm not sure what you are asking. The value of "y" could be just about anything.

[artax]

[Summing a rational number (y) to an irrational one you always obtain
an irrational number. So the only way y is rational is that a is equal to b or an his multiple. for example ^5 or 2*^5

[MikeNewYork]

[Summing a rational number (y) to an irrational one you always obtain
an irrational number. So the only way y is rational is that a is equal to b or an his multiple. for example ^5 or 2*^5

Erm...OK. :wink:

[Tdol]

I was going to say that. <liar>

[MikeNewYork]

I was going to say that. <liar>

[Hong Kong Chinese]

Teacher Tdol,

You are correct! She/he is a liar!
One cannot solve an equation with two unknowns!
e.g. a + b = 10

if a is equal one, b will be equal to nine,
However, if a is equal to two, b will be equal to eight and so on.
In conclusion, a and b are variables.

[RonBee]

Teacher Tdol,

You are correct! She/he is a liar!
One cannot solve an equation with two unknowns!
e.g. a + b = 10

if a is equal one, b will be equal to nine,
However, if a is equal to two, b will be equal to eight and so on.
In conclusion, a and b are variables.

I believe you are right, but I think Tdol was joking by calling himself a liar when he said, "I was going to say that."

:wink:

[Tdol]

Teacher Tdol,

You are correct! She/he is a liar!
One cannot solve an equation with two unknowns!
e.g. a + b = 10

if a is equal one, b will be equal to nine,
However, if a is equal to two, b will be equal to eight and so on.
In conclusion, a and b are variables.

Thanks for that, but I was calling myself a liar. If I was right, it was only by accident. If I disagreed with someone's view on the forum,I would try to phrase it more diplomatically.

[MikeNewYork]

Thanks for that, but I was calling myself a liar. If I was right, it was only by accident. If I disagreed with someone's view on the forum,I would try to phrase it more diplomatically.

I can attest to that fact. :wink: