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Byju's Answer
Standard VIII
Mathematics
Addition and Subtraction of Algebraic Expression
Subtracting 2...
Question
Subtracting
2
x
2
+
6
ā
4
x
from
3
x
2
ā
6
x
+
8
gives
.
A
2
x
2
−
2
x
+
2
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B
x
2
+
2
x
+
2
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C
x
2
−
2
x
+
2
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D
x
2
−
8
x
+
2
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Solution
The correct option is
C
x
2
−
2
x
+
2
Given:
(
3
x
2
−
6
x
+
8
)
−
(
2
x
2
+
6
−
4
x
)
Grouping like terms together, we get
=
(
3
x
2
−
2
x
2
)
+
(
−
6
x
+
4
x
)
+
(
8
−
6
)
=
x
2
−
2
x
+
2
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0
Similar questions
Q.
Subtract:
2
x
2
+
6
−
4
x
from
3
x
2
−
6
x
+
8.
Q.
The expression x
4
+ 4 can be factorized as
(a) (x
2
+ 2x + 2) (x
2
ā 2x + 2)
(b) (x
2
+ 2x + 2) (x
2
+ 2x + 2)
(c) (x
2
ā 2x ā 2) (x
2
ā 2x + 2)
(d) (x
2
+ 2) (x
2
ā 2)