find the product using suitable property (5x-1)(5x-1)
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(5x-1)^2
we use this property or identity -
(a-b)^2
then, a^2+ b^2- 2ab
=(5x)^2+1^2- 2 (5x)(1)
=25x^2 +1- 10x
also, we write -
25x^2- 10x + 1.
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