factorise x³+x²-4x-4
Answers
Answered by
3
Step-by-step explanation:
Explanation:
This factors by grouping:
x
3
−
x
2
−
4
x
+
4
=
(
x
3
−
x
2
)
−
(
4
x
−
4
)
x
3
−
x
2
−
4
x
+
4
=
x
2
(
x
−
1
)
−
4
(
x
−
1
)
x
3
−
x
2
−
4
x
+
4
=
(
x
2
−
4
)
(
x
−
1
)
x
3
−
x
2
−
4
x
+
4
=
(
x
2
−
2
2
)
(
x
−
1
)
x
3
−
x
2
−
4
x
+
4
=
(
x
−
2
)
(
x
+
2
)
(
x
−
1
)
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