Two immediate observations:
(1) Clearly, we can't have
, since that would make both the rational and the square root terms undefined.
(2) If
is real, then
only exists if
. This means that for
to exist, we require
.
If
, then we don't have to worry about
ever taking on a value of -2.
When you distribute, its basically when you give out things, as in, distribution.
Hope this helps!!
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Answer:
Decimal Fraction Percentage
3.24 81/25 324%
Step-by-step explanation:
Answer:
x² - 10x + 21 = 0
Step-by-step explanation:
We have to write an equation that has x = 3 and x = 7 are the only roots.
Therefore, the factors of the equation will be (x - 3) and (x - 7).
So, we can write the equation as (x - 3)(x - 7) = 0
⇒ x(x - 7) - 3(x - 7) = 0
⇒ x² - 10x + 21 = 0 (Answer)
Answer:
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