Question

please solve question 8

Answer 1

5^(2x+1) /25=125
Simply
5^(2x+1)/5^2=5^3
We know that a ^2/a^3=a ^2-3

5^(2x+1-2)=5^3
5^(2x - 1)=5^3

Find x
2x-1=3
2x=3+1
X =4/2=2

Answer 2

Hey bro!

ur solution here:

$5 {}^{2x + 1} \div 25 = 125 \\ \\ {5}^{2x + 1} \times \frac{1}{25} = {5}^{3} \\ \\ {25}^{2 x + 1} \times {5}^{ - 2} = {5}^{3} \\ \\ now \: solve \: power \: when \: base \: is \: same \\ \\ 2x + 1 - 2= 3 \\ \\ 2x = 3 +1\\ \\ x = 2 ans$