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Byju's Answer
Standard IX
Mathematics
Zeroes of a Polynomial
We write x+...
Question
We write
x
+
3
3
=
2
x
−
5
3
as
3
(
x
+
3
)
=
3
(
2
x
−
5
)
. This method is called ____ method.
A
substitution
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B
multiplication
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C
cross-multiplication
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D
elimination
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Solution
The correct option is
B
cross-multiplication
Given,
x
+
3
3
=
2
x
−
5
3
Let us see
3
(
x
+
3
)
=
3
(
2
x
−
5
)
This method is called cross-multiplication method.
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0
Similar questions
Q.
Solve the given quadratic equation by factorization method
2
x
x
−
3
+
1
2
x
+
3
+
3
x
+
9
(
x
−
3
)
(
2
x
+
3
)
=
0
Q.
Can we write
125
x
+
45
x
=
2.27
x
as
(
5
3
)
3
x
+
(
5
3
)
x
=
2
Q.
Solve
2
x
x
−
3
+
1
2
x
+
3
+
3
x
+
9
(
x
−
3
)
(
2
x
+
3
)
=
0
, then
x
+
1
is
Q.
Factorise:
(i)
x
3
−
2
x
2
−
x
+
2
(ii)
x
3
−
3
x
2
−
9
x
−
5
(iii)
x
3
+
13
x
2
+
32
x
+
20
(iv)
2
y
3
+
y
2
−
2
y
−
1
Q.
On dividing
(
5
x
4
+
7
x
3
+
2
x
2
–
3
x
+
5
)
by
(
x
+
3
)
, we get the quotient as
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