carlosleblanc26
01.12.2020 •
Mathematics
X - 9 = 1 what is x ?
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Ответ:
To factorize
x
9
−
1
, we can use the identity
a
3
−
b
3
=
(
a
−
b
)
(
a
2
+
a
b
+
b
2
)
.
Hence
x
9
−
1
=
(
x
3
)
3
−
1
3
=
(
x
3
−
1
)
(
x
6
+
x
3
+
1
)
factorizing
x
3
−
1
further
x
9
−
1
=
(
x
3
−
1
)
(
x
6
+
x
3
+
1
)
=
(
x
−
1
)
(
x
2
+
x
+
1
)
(
x
6
+
x
3
+
1
)
Ответ:
Multiply the numerator of the first fraction by the denominator of the second fraction. Set this equal to the product of the denominator of the first fraction and the numerator of the second fraction.
(Not sure if this is the answer you’re looking for)
Ответ:
Step-by-step explanation:
we have
For
substitute the values of m and the value of n in the equation
so