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Khi y \(\ge3\) => 2x < 0 => x \(\in\varnothing\)
=> y < 3
=> y \(\in\left\{0;1;2\right\}\)
Khi y = 2 => 2x = 64 => x = 7
Khi y = 1 => 2x = 484 => x \(\in\varnothing\)
Khi y = 0 => 2x =504 => x \(\in\varnothing\)
Vậy x = 7 ; y = 2
\(Khi\text{ y}\ge3\Rightarrow2^x< 0\Rightarrow x\in\varnothing\)
\(\Rightarrow y< 3\)
\(\Rightarrow y\in\left\{0;1;2\right\}\)
\(Khi\text{ y}=2\Rightarrow2^x=64\Rightarrow x=7\)
\(Khi\text{ y}=1\Rightarrow2^x=484\Rightarrow x\in\varnothing\)
\(Khi\text{ y}y=0\Rightarrow2^x=504\Rightarrow x\in\varnothing\)
\(\text{Vậy x=7;y=2}\)
\(\text{Hok tốt!}\)
\(\text{@Kaito Kid}\)
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\(\Rightarrow\)x+2\(\in\)Ư(9)
Ư(9)={\(\pm1\); \(\pm3\); \(\pm9\)}
\(\Rightarrow\)x+2\(\in\left\{\pm1;\pm3;\pm9\right\}\)
\(\Rightarrow\)x\(\in\left\{\pm1;-3;-5;-11;7\right\}\)
Vậy x\(\in\left\{\pm1;-3;-5;-11;7\right\}\)
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Bài này có 2 trường hợp:
TH1: x-1 = 0 suy ra x = 1
TH2: x+2 = 0 suy ra x = -2
Vậy x = 1 hoặc -2
Nhớ k cho mình nhé!
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1-(-2)=3
2+999999999=1000000001
3-2+9-9+10=11
nhớ k cho mình
chúc học tốt
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Bạn bảo tình bạn là rất tuyệt vời
nhưng ai ngờ
tình bạn giả tạo là có thật
= 4310887352
655748 x 6574=4310887352