nilai X YANG MEMENUHI 3^2x + 1 + 8.3^x - 3<0
Matematika
audi1233
Pertanyaan
nilai X YANG MEMENUHI 3^2x + 1 + 8.3^x - 3<0
1 Jawaban
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1. Jawaban marisaalifa22
[tex] {3}^{2x + 1} + 8 . {3}^{x}-3 < 0 \\ misal \: {3}^{x} = y \\ {( {3}^{x} )}^{2} . {3}^{1} + 8.{3}^{x}-3< 0 \\ {y}^{2} .3 + 8.y-3< 0 \\ 3 {y}^{2} +8y-3 < 0 \\ 3 {y}^{2} + 8y-3 < 0