Question

সমাধান করো 9×81x=27²-x​

Answer 1

Answer:

9x=81x,

Here we cannot cancel the variable x in both sides of the equation ( by dividing both sides by x ) as we all know 9 and 81 are different numbers.

So we can rewrite the equation as,

(9x - 81x) = 0

or, (81x - 9x) = 0

or, x (81–9) = 0

or, 72 x = 0

From the above equation we can clearly observe that the equation will satisfy if and only if x = 0 ( as 72 in a non-zero real number )

Thus the only accurate solution of this equation is x = 0 (x equals zero)

[ A rough assumption can also reach the solution to this equation as x tends to infinity ( positive or negative ) {Here in this case, we consider infinity multiplied by anything has an infinite value} ]

Step-by-step explanation:

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