Question

Find the value of x for which : (2/5) -7×(5/2) -3=(2/5) 2×​

Answer 1

Ans:- (2/5)^-7 × (5/2)^-3 = (2/5)^2x

=> (2/5)^-7 × (2/5)^3 = (2/5)^2x

=> 2x = -7 + 3 (since bases are equal so power must be equal)

=> 2x = -4

=> x = -2

here is your answer

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