Thank you all so much for taking the time to help out. I do appreciate. It appears there is no solution for the question. There must have been an error in whatever book from which my mate sent me that question.

Regards,

math9maniac

and there is a unique solution in the field of residue classes modulo 7 which is a finite field consisting of the following elements:

so by noticing that:

the unique solution, in this field, will be:

In fact it can be shown that there are, in principle, many fields that can be created which have solutions to this equation, the above solutions are just tow instances of them.]]>

The 'simplification' was not valid. √ (A-B) is not generally equal to √ A - √ B

I squared both sides of the equation to get

I'm still not seeing any real solutions. See https://www.mathsisfun.com/data/functio … ^8 - x + 2

Bob

]]>Your question made me just ask my friend again. She says she composed that from the question. The original question, she says, is actually:

√(x - b) = x^4. Find x, if b = 2.

Please help me again family.

]]>I agree with bob bundy's views.

]]>Can I just check that the equation you wrote down is correct?

]]>I'm not seeing any real solutions.

https://www.mathsisfun.com/data/functio … t(x) - x^4

Bob

]]>It has been a while. Other things than math have taken my time. I trust you're well. Please help me with this question. I couldn't help my friend and she needs the answer in few hours

√x - x^4 = √2. Find x.

Many thanks in advance.

]]>