Question

помогите пожалуйста ​

Answer 1

$8 - 2 {x}^{2} = 0 \\ 2 {x}^{2} - 8 = 0 \\ {x}^{2} - 4 = 0 \\ (x - 2)(x + 2) = 0 \\ x _{1} = 2 \\ x _{2} = - 2$

${x}^{2} - 36 = 0 \\ (x - 6)(x + 6) = 0 \\ x _{1} = 6 \\ x _{2} = - 6$