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r-ruslan [8.4K]
3 years ago
11

25^(x+2) = (1/5)^(4x)

Mathematics
1 answer:
dangina [55]3 years ago
8 0
The first step for solving this equation is to write 25^{x+2} in exponential form with a base of 5.
5^{2x+4} = ( \frac{1}{5}) ^{4x}
Write ( \frac{1}{5}) ^{4x} in exponential form with a base of 5.
5^{2x+4} = 5^{-4x}
Since the bases on both sides of the equal are the same,, set the exponents equal.
2x + 4 = -4x
Move the constant to the right side of the equation and then change its sign.
2x = -4x - 4
Now move the variable to the left side and change its sign.
2x + 4x = -4
Collect the terms with an x variable.
6x = -4
Lastly,, divide both sides of the equation by 6 to get your final answer.
x = - \frac{2}{3}
Let me know if you have any further questions.
:)
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