Factorise the following polynomials :(x2-x)2-10 (x2-x)+9
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Step-by-step explanation:
Let (x2-x) be a then we have,
=a^2-10a+9=0
=a^2-9a-a+9=0
=a(a-9) -1(a-9) =0
=(a-9) (a-1) =0
=a=9 or a=1
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