Question 1202609

3^(3x+4) −30×3^x +1=0

Rewrite the expression

81×3^3x −30×3x +1=0

substitute  t=3^x
 
81t^ 3 −30t+1=0

Solve 
Calculator
​
  
t≈−0.624609
t≈0.033434
t≈0.591174

Resubstitute t

3^x=  ≈−0.624609

3^x =  ≈0.033434

3^x =  ≈0.591174

Find x and conclude
​

​