Factorise,9(2a-b)whole square- 4(2a-b) -13.
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Let (2a-b) be m
Then, the given equation become
9m²-4m-13.
9m²-13m+9m-13
m(9m-13)+1(9m-13)
m=-1 or m=13/9
2a-b=-1
2a=b-1. (1)
putting the value of 2a=(b-1-b)=-1. (2)
a=-1/2
putting the value of (2) in (1),we get
-1=b-1
b=1-1=0
Therefore, a=-1/2. and b=0
Hope u understand it
Then, the given equation become
9m²-4m-13.
9m²-13m+9m-13
m(9m-13)+1(9m-13)
m=-1 or m=13/9
2a-b=-1
2a=b-1. (1)
putting the value of 2a=(b-1-b)=-1. (2)
a=-1/2
putting the value of (2) in (1),we get
-1=b-1
b=1-1=0
Therefore, a=-1/2. and b=0
Hope u understand it
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