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caitybugking
16.11.2020 •
Mathematics
Solve the equation x2 + 4x + 4 = 0
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Ответ:
(
x
−
2
)
(
x
−
2
)
=
0
x
=
2
Explanation:
To factor the expression you need to find factors of 4 which add up to 4.
The signs will be the same (because of +4), they are both minus (because of -4x).
2
×
2
=
4
and
2
+
2
=
4
(
x
−
2
)
(
x
−
2
)
=
0
Now that we have the factors, we can solve:
If
x
−
2
=
0
, then
x
=
2
(Sorry if confusing, it wouldnt let me write it out how i wanted to..)
Ответ:
Well I'm a bit confused since 5 3/4 is a mixed number. Please elaborate!