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Пусть =а, тогдаD=10²-4*16=36=6²a₁=(10+6)/2=8a₂=(10-6)/2=2a∈(0; 2)∨(8; +∞)∈(0; 2)∨(8; +∞), а значитx∈(-∞;1)∨(3;+∞)

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gessu @gessu

August 2022 1 16 Report

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DariosI

Verified answer

$2*2 ^{x}+32*2 ^{-x}>20$
Пусть $2^{x}$ =а, тогда
$2a+ 32* a^{-1}>20$
$2a+ \frac{32}{a} >20$
$\frac{2a ^{2}+32 }{a}-20>0$
$\frac{2a ^{2}-20a+32 }{a}>0$
$\frac{2(a ^{2}-10a+16) }{a}>0$
D=10²-4*16=36=6²
a₁=(10+6)/2=8
a₂=(10-6)/2=2
a∈(0; 2)∨(8; +∞)
$2^{x}$ ∈(0; 2)∨(8; +∞), а значит
x∈(-∞;1)∨(3;+∞)

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Verified answer

v rastvor soderzhashij 224 gramma metalla v vide sulfata pogruzili cinkovuyu plas

po thu 2h2o22h2o572 kdzh rasschitajte massu sgorevshego vodoroda esli vydelilos

4 zadaniya za poldnya ostavshuyusya chast zadaniya vypolnil odin plotnik za den sko

4 nahodyashihsya v nej yablok i perelozhili vo vtoruyu to kolichestvo yablok v korzi

starinnaya zadacha torgovec imeya sotnyu limonov rozdal ih trem raznoschikam s te

skorost nekotoroj reakcii uvelichilos v 9 raz pri povyshenii temperatury ot 40 gf80bcdf65775f08a2ee2e36f2fed18c6 65999

skorost nekotoroj reakcii uvelichilos v 9 raz pri povyshenii temperatury ot 40 g4870bc8ccca1622d487d3b35a119b03f 726

skorost nekotoroj reakcii uvelichilos v 9 raz pri povyshenii temperatury ot 40 g

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