Identify all sets to which the number belongs. –0.249851765...
2 answers:
Answer:
i. Irrational numbers
ii. Real numbers
Step-by-step explanation:
The given decimal is –0.249851765...
This number does not recur and it does not also terminate.
It belongs to the set of irrational numbers because it cannot be written in the form where
and
.
This numbers also belongs to the set of real numbers.
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Answer:
For , x = 2, or x = - 2.
Step-by-step explanation:
Here, the given expression is :
Now, using the ALGEBRAIC IDENTITY:
Comparing this with the above expression, we get
⇒Either (x-2) = 0 , or ( x + 2) = 0
So, if ( x- 2) = 0 ⇒ x = 2
and if ( x + 2) = 0 ⇒ x = -2
Hence, for , x = 2, or x = - 2.