LogV2(4+8x) > -2 ОДЗ: 4+8x>0; x> -1/2
logV2(4+8x) > logV2(1/2)
4+8x>1/2
8x>1/2-4
8x>-7/2
x> -7/16
__________(-1/2)____________________
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_______________________(-7/16)______
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Ответ:x e (-7/16; + беск.)