factorise:3^x-1=1/27
Answers
Answered by
0
Answer:
=
−
4
,
x
=
−
5
Explanation:
3
x
2
+
20
=
(
1
27
)
3
x
We know that
1
27
=
1
3
3
So,
3
x
2
+
20
=
(
1
3
3
)
3
x
By property
1
a
=
a
−
1
3
x
2
+
20
=
(
3
−
3
)
3
x
3
x
2
+
20
=
3
−
9
x
Now as bases are equal we equate powers and find
x
x
2
+
20
=
−
9
x
x
2
+
9
x
+
20
=
0
Answered by
4
Step-by-step explanation:
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