Monday

April 21, 2014

April 21, 2014

Posted by **Anonymous** on Saturday, July 14, 2007 at 11:42am.

5^(x+1) = 25

i know that x would equal 1 because 5^2 is 25, but i don't know how to show how to solve it

All you need to do is what you just did: Explain that if x = 1, the equation is satisfied.

If you are looking for a method of solution other than a guess that happens to work, take the log of both sides of the equation.

(x+1) log 5 = log 25

x+1 = log 25/log 5 = (log 5^2)/log5

= (2 log 5)/log 5 = 2

x = 1

solve for x without using a calculator

5^(x+1) = 25

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

Therefore, (x + 1) = 2 making x = 1.

- math -
**Anonymous**, Monday, October 8, 2007 at 5:27pm(x+1)(x-1)=5(x-1)

**Related Questions**

maths - how do i work out 7.25/0.25 without using a calculator???

Math - Hi,I need to know how to do question like this without using a calculator...

math - 2.)If f(x)=3x,g(x)=x-3,and h(x)= the square root of x, find (fogox)(X). ...

math - 2.)If f(x)=3x,g(x)=x-3,and h(x)= the square root of x, find (fogox)(X). ...

Adv. Alg/Trig - How would you solve tan(-335) without using a calculator? I got ...

math - Solve for x (without using a calculator): log base 3 of x^2= 2log base 3 ...

Algebra - How would i solve for this problems? also what is the answer(s) 5.)...

math - explain how you can find the sum 25+59 without using pencil and paper or ...

math please - what exactly is a prime factor would x-5 x+5 and x2+25 all be ...

math - evaluate without using a calculator [log(5)4 x log(2)10 ]/ [log(25)√...