find the value of x if 5^2×5^x-5=625
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Answered by
5
=> 625^x = 25/5^x
=> 5^4x = 5²/5^x
=> 5^4x = 5^(2-x)
=> 4x = 2-x
=> 4x + x = 2
=> 5x = 2
=> x = 2/5 or 0.4
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Answered by
11
Answer:
5² × 5^x - 5 = 625
5² × 5 ^3 - 5 = 625
25 × 25 = 625
625 = 625
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