Write an equation whose solution is x = 7.
1 answer:
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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.
Answer:
The answer is "Choice D"
Step-by-step explanation:
Determining the information:
For " " and "
",
relates to
when
and
has the same cardinality. therefore, R does not have reflective:
For every "", "
" So, X not proper subset of
. So, R does not havereflexive.
R does not have symmetry:
For every "" ,then, "
" is not true because
not relate to
. So, R is not symmetric.
R does not have antisymmetric:
When relates to
and
is relate to
, then "
" and "
"
Therefore, R is anti-symmetric.