Question

30. If 5* =125-1, find the value of 3* X 4* ?​

Answer 1

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Step-by-step explanation:

5*2x+1÷25=125

=>5*2x+1÷5*2 =125

=>5*2x+1−2=5*3

Now, but equating the power we have,

=> 2x +1 - 2 = 3

=> 2x - 1 = 3

=> 2x = 3+1

=> 2x = 4

=> x = 4/2

=> x = 2

Hence, the value of x = 2