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Find all values of r such that 5^(2r-3) = 25

 Aug 3, 2023

Best Answer 

 #1
avatar+129316 
+1

5^(2r-3)  = 25

 

Express 25  as 5^2

 

5^(2r-3) = 5^(2)

 

The bases are the same, so solve for the exponents

 

2r -3 =   2         add 3  to each side

 

2r = 5              divide both sides by 2

 

r = 5/2

 

cool cool cool

 Aug 3, 2023
 #1
avatar+129316 
+1
Best Answer

5^(2r-3)  = 25

 

Express 25  as 5^2

 

5^(2r-3) = 5^(2)

 

The bases are the same, so solve for the exponents

 

2r -3 =   2         add 3  to each side

 

2r = 5              divide both sides by 2

 

r = 5/2

 

cool cool cool

CPhill Aug 3, 2023

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