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chuche · Accepted Answer

`5^2x-3-2.5^2=5^2.3``=>5^{2x-3}=5^2.3+2.5^2``=>5^{2x-3}=5^2(3+2)``=>5^{2x-3}=25.5``=>5^{2x-3}=125``=>5^{2x-3}=5^3``=>2x-3=3``=>2x=3+3=6``=>x=6:2``=>x=3``30 - [ 4(x - 20 ) + 15 ] = 3``=>[ 4(x - 20 ) + 15 ] = 27``=>[ 4(x - 20 )] = 27 - 15``=>4( x - 20 ) = 12``=>x - 20 = 12 : 4``=>x - 20 = 3``=>x = 3 + 20``=>x = 23``740: (x+10)=10^(2)-2.13``=>740: (x+10)=100-26``=>740: (x+10)=74``=>x+10=740:74``=>x+10=10``=>x=10-10``=>x=0``48-3(x+5)=24``=>3(x+5)=48-24``=>3(x+5)=24``=>x+5=24:3=8``=>x=8-5``=>x=3$2^{x+1}-2^x=32$$⇒2^x.(2^1-1)=32$$⇒2^x.(2-1)=32$$⇒2^x.1=32$$⇒2^x=32$$⇒2^x=2^5$$⇒x=5$Câu trả lời: `5^2x-3-2.5^2=5^2.3``=>5^{2x-3}=5^2.3+2.5^2``=>5^{2x-3}=5^2(3+2)``=>5^{2x-3}=25.5``=>5^{2x-3}=125``=>5^{2x-3}=5^3``=>2x-3=3``=>2x=3+3=6``=>x=6:2``=>x=3``30 - [ 4(x - 20 ) + 15 ] = 3``=>[ 4(x - 20 ) + 15 ] = 27``=>[ 4(x - 20 )] = 27 - 15``=>4( x - 20 ) = 12``=>x - 20 = 12 : 4``=>x - 20 = 3``=>x = 3 + 20``=>x = 23``740: (x+10)=10^(2)-2.13``=>740: (x+10)=100-26``=>740: (x+10)=74``=>x+10=740:74``=>x+10=10``=>x=10-10``=>x=0``48-3(x+5)=24``=>3(x+5)=48-24``=>3(x+5)=24``=>x+5=24:3=8``=>x=8-5``=>x=3$2^{x+1}-2^x=32$$⇒2^x.(2^1-1)=32$$⇒2^x.(2-1)=32$$⇒2^x.1=32$$⇒2^x=32$$⇒2^x=2^5$$⇒x=5$

minh · Answer

52x−3−2.52=52.352x-3-2.52=52.3⇒52x−3=52.3+2.52⇒52x-3=52.3+2.52⇒52x−3=52(3+2)⇒52x-3=52(3+2)⇒52x−3=25.5⇒52x-3=25.5⇒52x−3=125⇒52x-3=125⇒52x−3=53⇒52x-3=53⇒2x−3=3⇒2x-3=3⇒2x=3+3=6⇒2x=3+3=6⇒x=6:2⇒x=6:2⇒x=3⇒x=330−[4(x−20)+15]=330-[4(x-20)+15]=3⇒[4(x−20)+15]=27⇒[4(x-20)+15]=27⇒[4(x−20)]=27−15⇒[4(x-20)]=27-15⇒4(x−20)=12⇒4(x-20)=12⇒x−20=12:4⇒x-20=12:4⇒x−20=3⇒x-20=3⇒x=3+20⇒x=3+20⇒x=23⇒x=23740:(x+10)=102−2.13740:(x+10)=102-2.13⇒740:(x+10)=100−26⇒740:(x+10)=100-26⇒740:(x+10)=74⇒740:(x+10)=74⇒x+10=740:74⇒x+10=740:74⇒x+10=10⇒x+10=10⇒x=10−10⇒x=10-10⇒x=0⇒x=048−3(x+5)=2448-3(x+5)=24⇒3(x+5)=48−24⇒3(x+5)=48-24⇒3(x+5)=24⇒3(x+5)=24⇒x+5=24:3=8⇒x+5=24:3=8⇒x=8−5⇒x=8-5`=>x=32x+1−2x=322x+1−2x=32⇒2x.(21−1)=32⇒2x.(21−1)=32⇒2x.(2−1)=32⇒2x.(2−1)=32⇒2x.1=32⇒2x.1=32⇒2x=32⇒2x=32⇒2x=25⇒2x=25⇒x=552x−3−2.52=52.352x-3-2.52=52.3⇒52x−3=52.3+2.52⇒52x-3=52.3+2.52⇒52x−3=52(3+2)⇒52x-3=52(3+2)⇒52x−3=25.5⇒52x-3=25.5⇒52x−3=125⇒52x-3=125⇒52x−3=53⇒52x-3=53⇒2x−3=3⇒2x-3=3⇒2x=3+3=6⇒2x=3+3=6⇒x=6:2⇒x=6:2⇒x=3⇒x=330−[4(x−20)+15]=330-[4(x-20)+15]=3⇒[4(x−20)+15]=27⇒[4(x-20)+15]=27⇒[4(x−20)]=27−15⇒[4(x-20)]=27-15⇒4(x−20)=12⇒4(x-20)=12⇒x−20=12:4⇒x-20=12:4⇒x−20=3⇒x-20=3⇒x=3+20⇒x=3+20⇒x=23⇒x=23740:(x+10)=102−2.13740:(x+10)=102-2.13⇒740:(x+10)=100−26⇒740:(x+10)=100-26⇒740:(x+10)=74⇒740:(x+10)=74⇒x+10=740:74⇒x+10=740:74⇒x+10=10⇒x+10=10⇒x=10−10⇒x=10-10⇒x=0⇒x=048−3(x+5)=2448-3(x+5)=24⇒3(x+5)=48−24⇒3(x+5)=48-24⇒3(x+5)=24⇒3(x+5)=24⇒x+5=24:3=8⇒x+5=24:3=8⇒x=8−5⇒x=8-5`=>x=32x+1−2x=322x+1−2x=32⇒2x.(21−1)=32⇒2x.(21−1)=32⇒2x.(2−1)=32⇒2x.(2−1)=32⇒2x.1=32⇒2x.1=32⇒2x=32⇒2x=32⇒2x=25⇒2x=25⇒x=5Câu trả lời: 52x−3−2.52=52.352x-3-2.52=52.3⇒52x−3=52.3+2.52⇒52x-3=52.3+2.52⇒52x−3=52(3+2)⇒52x-3=52(3+2)⇒52x−3=25.5⇒52x-3=25.5⇒52x−3=125⇒52x-3=125⇒52x−3=53⇒52x-3=53⇒2x−3=3⇒2x-3=3⇒2x=3+3=6⇒2x=3+3=6⇒x=6:2⇒x=6:2⇒x=3⇒x=330−[4(x−20)+15]=330-[4(x-20)+15]=3⇒[4(x−20)+15]=27⇒[4(x-20)+15]=27⇒[4(x−20)]=27−15⇒[4(x-20)]=27-15⇒4(x−20)=12⇒4(x-20)=12⇒x−20=12:4⇒x-20=12:4⇒x−20=3⇒x-20=3⇒x=3+20⇒x=3+20⇒x=23⇒x=23740:(x+10)=102−2.13740:(x+10)=102-2.13⇒740:(x+10)=100−26⇒740:(x+10)=100-26⇒740:(x+10)=74⇒740:(x+10)=74⇒x+10=740:74⇒x+10=740:74⇒x+10=10⇒x+10=10⇒x=10−10⇒x=10-10⇒x=0⇒x=048−3(x+5)=2448-3(x+5)=24⇒3(x+5)=48−24⇒3(x+5)=48-24⇒3(x+5)=24⇒3(x+5)=24⇒x+5=24:3=8⇒x+5=24:3=8⇒x=8−5⇒x=8-5`=>x=32x+1−2x=322x+1−2x=32⇒2x.(21−1)=32⇒2x.(21−1)=32⇒2x.(2−1)=32⇒2x.(2−1)=32⇒2x.1=32⇒2x.1=32⇒2x=32⇒2x=32⇒2x=25⇒2x=25⇒x=552x−3−2.52=52.352x-3-2.52=52.3⇒52x−3=52.3+2.52⇒52x-3=52.3+2.52⇒52x−3=52(3+2)⇒52x-3=52(3+2)⇒52x−3=25.5⇒52x-3=25.5⇒52x−3=125⇒52x-3=125⇒52x−3=53⇒52x-3=53⇒2x−3=3⇒2x-3=3⇒2x=3+3=6⇒2x=3+3=6⇒x=6:2⇒x=6:2⇒x=3⇒x=330−[4(x−20)+15]=330-[4(x-20)+15]=3⇒[4(x−20)+15]=27⇒[4(x-20)+15]=27⇒[4(x−20)]=27−15⇒[4(x-20)]=27-15⇒4(x−20)=12⇒4(x-20)=12⇒x−20=12:4⇒x-20=12:4⇒x−20=3⇒x-20=3⇒x=3+20⇒x=3+20⇒x=23⇒x=23740:(x+10)=102−2.13740:(x+10)=102-2.13⇒740:(x+10)=100−26⇒740:(x+10)=100-26⇒740:(x+10)=74⇒740:(x+10)=74⇒x+10=740:74⇒x+10=740:74⇒x+10=10⇒x+10=10⇒x=10−10⇒x=10-10⇒x=0⇒x=048−3(x+5)=2448-3(x+5)=24⇒3(x+5)=48−24⇒3(x+5)=48-24⇒3(x+5)=24⇒3(x+5)=24⇒x+5=24:3=8⇒x+5=24:3=8⇒x=8−5⇒x=8-5`=>x=32x+1−2x=322x+1−2x=32⇒2x.(21−1)=32⇒2x.(21−1)=32⇒2x.(2−1)=32⇒2x.(2−1)=32⇒2x.1=32⇒2x.1=32⇒2x=32⇒2x=32⇒2x=25⇒2x=25⇒x=5

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