Question

x la puterea a doua egal cu361...va rogggg

Answer 1

$x^{2}=361 \\ x=\sqrt{361}=19 \\ x=-\sqrt{361}=-19$
solutia 1:
x=19
solutia 2:
x=-19

Answer 2

$x^2= 361 \\ x= \sqrt{361 } \\ x=19 \\ x=- \sqrt{361} \\ x=-19 \\ S=\{-19;19\}$