1. selesaikan setiap persamaan eksponensial brikut.
![\left \{ {{2^{x} . 5^{x+1} = 4 . 2^{-y} } \atop { 5^{x} = 2 . 2^{y} } \\2. jika [tex] 3^{x} = 2^{x-1}](https://tex.z-dn.net/?f=+%5Cleft+%5C%7B+%7B%7B2%5E%7Bx%7D+.+5%5E%7Bx%2B1%7D+%3D+4+.+2%5E%7B-y%7D+%7D+%5Catop+%7B+5%5E%7Bx%7D+%3D+2+.+2%5E%7By%7D+%7D+%5C%5C2.+jika+%5Btex%5D+3%5E%7Bx%7D+%3D+2%5E%7Bx-1%7D+ "\left \{ {{2^{x} . 5^{x+1} = 4 . 2^{-y} } \atop { 5^{x} = 2 . 2^{y} } \\2. jika [tex] 3^{x} = 2^{x-1}")
, tunjukan bahwa
Gagoh
Sepertinya soal nomor 2 seharusya
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