SOLUTION: 4(2^x)+31(2^x)-8=0

Question 256102: 4(2^x)+31(2^x)-8=0
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.

Let

Replace each term with 'z'

Combine like terms.

Add 8 to both sides.

Divide both sides by 35.

Plug in

Recall that can be rewritten as

Use the property shown above to rewrite the equation.

Rearrange the equation.

So the exact answer is which approximates to
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