Question

Помогите решить пожалуйста

Answer 1

[.] \left \{ {{7^{x}+7^{x-1} \geq 56 } \atop {0.2^{x}*2 \ \textgreater \ 0.2 ^{x^{2}} }} \right. [.]
[.] \left \{ {{x \geq 2} \atop {x ∈ R}} \right. [.]