Hello from France everyone ! Before solving these equations, you should determine the definition domain of each one. This is another way to accept and reject solutions. For example, sqr(3x - 2) is valid (in the set of real numbers) only if (3x - 2) >= 0, thus only if x >= 2/3. The solution x=6 is part of the definition domain, so it is valid.
Hello from France everyone ! Before solving these equations, you should determine the definition domain of each one. This is another way to accept and reject solutions.
For example, sqr(3x - 2) is valid (in the set of real numbers) only if (3x - 2) >= 0, thus only if x >= 2/3. The solution x=6 is part of the definition domain, so it is valid.