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5^y=5^2y+4

Solve for y I guess? not sure... ? :l

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Hi Kayla,
 
Is the equation 5y=52y+4 or 5y=52y+4 ? 
 
Jim
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1 Answer

I would say that the equation is 5y= 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.