Question

please give the explanation for the seventh one please​

Answer 1

Answer:

Hi There,

Here we have $5^2^x^+^1$ ÷ 25 = 125

so convert 25 and 125 to the powers of 5, i.e.,

25 = $5^2$

125 = $5^3$

so we have $5^2^x^+^1$ ÷ $5^2$ = $5^3$

=>  $5^2^x^+^1^-^2$ = $5^3$

so cancelling the base 5s', we have,

=> 2x - 1 = 3

=> 2x = 3 + 1

=> 2x = 4

=> x = 2

so the value of x is 2,

so the correct option is A

Hope this helps you.