factorise the following 2x square + 5x + 2
Answers
Answered by
1
Answer:
I don't know
Step-by-step explanation:
Answered by
0
Answer:
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
=
2
⋅
2
=
4
and
N
1
+
N
2
=
b
=
5
After trying out a few numbers we get
N
1
=
4
and
N
2
=
1
4.1
=
4
, and
4
+
1
=
5
2
x
2
+
5
x
+
2
=
2
x
2
+
4
x
+
1
x
+
2
2
x
(
x
+
2
)
+
1
(
x
+
2
)
(
x
+
2
)
is common to both the terms.
(
2
x
+
1
)
(
x
+
2
)
is the factorised form.
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