Question

Solve for the unknown.

3x^3=812^x-5

5x=25^3x+5

27^4x=9^x+1

3^x=9^x+5

Answer 1

sorry it's quite complex, simplify then... had to use an nspire

1. x=1.22248
2. x=15624.8
3. x=0.057522 (shown in picture)
4. x=-0.732487

too bad i cant upload more than 1 pic