Answer:
x can be 3, -3, i, or -i.
Step-by-step explanation:
If you can't find the factoring by looking at this, simplify the equation.
let
x
2
=
y
to make things easier to see
Now we have
y
2
−
8
y
−
9
=
0
See it now?
We can factor into
(
y
−
9
)
(
y
+
1
)
Now substitute back in
x
2
for
y
.
(
x
2
−
9
)
(
x
2
+
1
)
Since
(
x
2
−
9
)
is a difference of two squares,
(
x
−
3
)
(
x
+
3
)
Now we have
(
x
−
3
)
(
x
+
3
)
(
x
2
+
1
)
x can be 3, -3 for the first two parts
x
2
+
1
=
0
can become
x
2
=
−
1
Taking the positive and negative root means
x
=
±
√
−
1
Thus
x
=
±
i
in addition to 3 and -3.
<span>2r2 + 3s3 − r2 + 4t2 − r2
</span>
= 19
9514 1404 393
Answer:
x = 12
Step-by-step explanation:
The similarity statement tells you corresponding sides have the same ratio.
AB/BC = FE/EC
x/10 = 6/5
x = 10(6/5)
x = 12
The ans is the one with G'(-6,0)
Answer:
C. Yvette's independent and dependent probabilities are equal.
Step-by-step explanation:
<em>To figure this out we can use a drawing & word</em>
<em>Draw 2 marbels purple </em>
<em>Then figure out Yvette's independece & Dependece by looking at the marbels you've drawn in a notebook or scrap paper</em>
<em>Use a pencil so you erase what you put down on the paper the click the answer.</em>
Good luck Hope you get it right
remember math is math it doesn't have to be perfect as long as you keep trying. Practice makes perfect.
Hope this helps
