Question

how do you solve this by taking the square root of both sides. Express irrational answers in radical form. (x-10)to the 2nd power=4

Answer 1

\[(x-10)^2=4\implies x-10=\pm \sqrt{4}\implies x=10\pm \sqrt{4}\]

Answer 2

well; by taking the sqrt of each side; the sqrt(yada^2) cancels each other to just "yada"

Answer 3

but it tends to produce spurious results which should be double checked for accuracy