factorise 6ab-18a square b
Answers
Answered by
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Step-by-step explanation:
Given the set:
18
a
,
20
a
b
,
6
a
b
.
First find the greatest common factor of
18
,
20
,
6
.
18
=
2
⋅
3
2
20
=
2
2
⋅
5
6
=
2
⋅
3
∴
GCF
=
2
Then, find the
GCF
of
a
,
a
b
,
a
b
.
a
=
a
a
b
=
a
⋅
b
∴
GCF
=
a
Now, multiply the two
GCF
s of the two sets together.
2
⋅
a
=
2
a
That is the greatest common factor of the whole sequence.
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