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Byju's Answer
Standard IX
Mathematics
(xĀ±a)(xĀ±b) = xĀ²Ā±(a+b)x+ab.
Expand the fo...
Question
Expand the following:
(
i
v
)
(
3
x
+
4
)
(
2
x
–
1
)
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Solution
Given: Expression is
(
3
x
+
4
)
(
2
x
–
1
)
.
Now, expand the given binomials by multiplying
(
2
x
−
1
)
with each term of
(
3
x
+
4
)
.
⇒
(
3
x
+
4
)
(
2
x
–
1
)
=
3
x
×
(
2
x
−
1
)
+
4
×
(
2
x
−
1
)
=
6
x
2
−
3
x
+
8
x
−
4
=
6
x
2
+
5
x
−
4
Hence,
(
3
x
+
4
)
(
2
x
–
1
)
=
6
x
2
+
5
x
−
4
.
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(xĀ±a)(xĀ±b) = xĀ²Ā±(a+b)x+ab.
Standard IX Mathematics
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