Francisco E. | Francisco; Civil Engineering, Math., Science, Spanish, Computers.Francisco; Civil Engineering, Math., Sci...

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1

I would say that the equation is 5^{y}= 5^{(2y+4)} Then, if the equality is true, the two exponents are equal; then we might say that y = 2y + 4 => Y = -4. To proof we have that 5^(-4) = 5^(-8+4). This is true so the answer is correct.

## Comments

^{y}=5^{2y}+4 or 5^{y}=5^{2}y+4 ?