Question

Помогите пожалуйста)))

Answer 1

${x}^{2} = 7 \\ x1 = \sqrt{7} \\ x2 = - \sqrt{7}$

Answer 2

${x}^{2} = 7 \\ x = - \sqrt{7} \\ x = \sqrt{7} \\ x1 = - \sqrt{7} \\ x2 = \sqrt{7}$