1) 3^x+2 +3^x-1 < 28

Question

1) 3^x+2 +3^x-1 < 28

Answer 1

3ˣ⁺²+3ˣ⁻¹<28<br>3²*3ˣ+3ˣ/3<28<br>9*3ˣ+3ˣ/3<28   I×3<br>27*3ˣ+3ˣ<84<br>28*3ˣ<84<br>3ˣ<3¹<br>x<1.<br>