factories x^2+x-12 please
Answers
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0
Answer:
(x-3)(x+4)
Step-by-step explanation:
this is the factors.
Answered by
0
We can Split the Middle Term of this expression to factorise it
In this technique, if we have to factorise an expression like
a
x
2
+
b
x
+
c
, we need to think of 2 numbers such that:
N
1
⋅
N
2
=
a
⋅
c
=
1
⋅
−
12
=
−
12
AND
N
1
+
N
2
=
b
=
−
1
After trying out a few numbers we get
N
1
=
3
and
N
2
=
−
4
3
⋅
−
4
=
−
12
, and
3
+
(
−
4
)
=
−
1
x
2
−
x
−
12
=
x
2
+
3
x
−
4
x
−
12
=
x
(
x
+
3
)
−
4
(
x
+
3
)
x
+
3
is a common factor to each of the terms
=
(
x
+
3
)
(
x
−
4
)
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