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26 votes
26 votes
Solve the following equations
5^2x-2(5^x)-15=0

User Dariober
by
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1 Answer

22 votes
22 votes

Answer:

x = 1

Explanation:


{5}^(2x) - 2( {5}^(x) ) - 15 = 0


( {5}^(x) {)}^(2) - 2 * {5}^(x) - 15 = 0


{t}^(2) - 2t - 15 = 0


{5}^(x) t = - 3 \: \: .5


{5}^(x) = 5


x = 1

User Cyberbemon
by
3.6k points