Factorise 9 2a b 2 4 2a b 13

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Factorise 9(2a-b)2-4(2a-b)-13

Answered by admin @


Let the value of 2a-b be x. Then
A.T.Q.

9x²-4x-13------------------------1
By factorising method
9x²-13x+9x-13
x×(9x-13)+1×(9x-13)
(x+1)(9x-13)
From Equation 1
[2a-b+1][9×(2a-b)-13]
[2a-b+1][18a-9b-13]

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