2^(x-5)=4^(x-1) then x is equal to
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Answered by
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Answer:
x = -3
Step-by-step explanation:
Before solving these kinds of Questions, we must know an important rule,
(a^m)^n = a^(m × n)
Now,
we have
2^(x - 5) = 4^(x - 1)
But we know that,
4 = 2 × 2 = 2²
Thus,
2^(x - 5) = (2²)^(x - 1)
2^(x - 5) = 2^(2 × (x - 1))
2^(x - 5) = 2^(2(x - 1))
2^(x - 5) = 2^(2x - 2)
Now, the bases are equal then, the powers also must be equal.
Thus,
x - 5 = 2x - 2
2x - x = 2 - 5
x = -3
Hope it helped and believing you understood it........All the best
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