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VikaD [51]
3 years ago
10

I really don't understand this.

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0

Answer:

parang wla po yung answer

Step-by-step explanation:

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4^x-10\cdot2^x+16=0\Rightarrow(2^2)^x-10\cdot2^x+16=0\Rightarrow(2^x)^2-10\cdot2^x+16=0

subtitute\ 2^x=t > 0\\\\t^2-10t+16=0\\t^2-2t-8t+16=0\\t(t-2)-8(t-2)=0\\(t-2)(t-8)=0\iff t-2=0\ or\ t-8=0\\\\t=2\ or\ t=8\\\\t=2^1\ or\ t=2^3\\\\therefore\ 2^x=2^1\ or\ 2^x=2^3\\\\Answer:\boxed{x=1\ or\ x=3}
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4 years ago
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Step-by-step explanation:

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3 years ago
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zysi [14]
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3 years ago
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Eleni bought 3 packs of crayons. She then found 3 crayons in her desk Eleni now has 24 crayons. How many crayons were in each pa
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1. subtract the 3 found crayons from the total (24)

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