Question

Factorise (5x - 1/x)^2+4(5x-1/x)+4

Answer 1

Answer:

Factorise (5x - 1/x)^2+4(5x-1/x)+4

Step-by-step explanation:

LET 5x-1/x=a

(5x - 1/x)²+4(5x-1/x)+4

=a²+4a+4

=a²+2.a.2+2²

=(a+2)²

=(5x-1/x+2)²

Answer 2

Step-by-step explanation:

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