5x^2 +3 = -122 a. no solution b. -5 c. +‐5 d. +- 25
2 answers:
You might be interested in
If n is rational, it means that
Therefore when we do n² we can write it as
Remember that the product of two integer numbers is also an integer, therefore we can guarantee that
Then we can confirm that n² is the quotient of two integers and the denominator is not zero, therefore, n² is always rational, it cannot be an irrational number