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robert7248
05.12.2019 •
Mathematics
Asap! simplify -5 - square root -44
a. -5-4 square root 11i
b. -5-4i square root 11
c. -5-2i square root 11
d. -5-2 square root 11i
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Ответ:
Step-by-step explanation:
The not simplified form is![-5-\sqrt{-44}](/tpl/images/0405/0987/5f0df.png)
you know that
is true a and b are both positive or one of it is negative (not both of them).
You can write -44 as -1 × 4 × 11 inside square root.
So,
(
)
(NOTE : You must know that
is written as
)
Ответ:
We will count number of squares
first term is 4
so,![a_1=4](/tpl/images/0121/8962/e97aa.png)
second term is 7
so,![a_2=7](/tpl/images/0121/8962/38ab9.png)
third term is 10
so,![a_3=10](/tpl/images/0121/8962/a2e29.png)
We can see that this sequence is in arithematic sequence
we can use nth term formula
where
an is nth terms
a1 is first term
d is common difference
n is total number of terms
now, we can plug values
and we get