Question

log of x to the base 10 +log of (x-21) =2​

Answer 1

Answer:

25

Step-by-step explanation:

The quadratic equation that we get is x²- 21x - 100 = 0

solving we get x = 25 and -4.

But -4 can't be a solution because logarithm of negative values are not defined.

Hence, value of x is 25.

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