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Question

$(x-5)^2$

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Answer 1 · 2018-04-10T15:29:50

$x^2-10x+25$

$(x-5)^2$
Expand using the square of difference formula:
$(a-b)^2=a^2-2ab+b^2$
so in this case:
$(x-5)^2=x^2-10x+25$