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andrew11 [14]
2 years ago
12

For what values of x does 25× - 5ײ-3?

Mathematics
1 answer:
dusya [7]2 years ago
4 0

Answer:

X = 3, -1; B

Step-by-step explanation:

Use log properties, log 5 on both sides, log 5 of 25 is 2 that times the exponent, so 2*x = 2x, and on the other side, log 5 and base of 5  cancels. So 2x = x^2 -3, which can be solved using factoring:

x^2 -2x -3 = (x-3)(x+1) = 0, x=3,-1

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