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If (25)x−3=(125)2x−3(25)^{x-3} = (125)^{2x - 3}(25)x−3=(125)2x−3, then the value of x will be​
Question

If (25)x3=(125)2x3(25)^{x-3} = (125)^{2x - 3}, then the value of x will be​

A.

23\frac{2}{3}​​

B.

32\frac{3}{2}​​

C.

34\frac{3}{4}​​

D.

14\frac{1}{4}​​

Correct option is C

Given:

(25)x3=(125)2x3(25)^{x - 3} = (125)^{2x - 3}​​

Solution:

(25)x3=(125)2x3 [(5)2]x3=[(5)3]2x3 (5)2x6=(5)6x9(25)^{x - 3} = (125)^{2x - 3}\\ \ \\ \left[(5)^2\right]^{x - 3} = \left[(5)^3\right]^{2x - 3} \\ \ \\ (5)^{2x-6} = (5)^{6x-9}​​

Base are same, comparing power

2x - 6 = 6x - 9 

2x - 6x = -9 + 6

-4x = -3 

x = 34\frac34​​

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