To which subset of real numbers does -13 belong? (Select all that apply.)
2 answers:
Answer: Option 'a' and 'd' are correct.
Step-by-step explanation:
Since we have given that
A number = -13
We need to find the subset of real number in which -13 belongs:
-13 is a negative integer.
It can be written in form.
So, it can be considered as rational number too.
But natural and whole numbers does not contain negative terms.
Hence, Option 'a' and 'd' are correct.
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Answer:
x = - 3 and x = 1
Step-by-step explanation:
Given the rational expression
The denominator of the expression cannot be zero as this would make the expression undefined. Equating the denominator to zero and solving gives the values that x cannot be, that is
x² + 2x - 3 = 0 ← in standard form
(x + 3)(x - 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 1 = 0 ⇒ x = 1
Thus x = 1 and x = - 3 are both excluded values