Question

If p(x)=x2-2x+1 then p(-1)is equal to

Answer 1

$p(x) = {x}^{2} - 2x + 1 \\ = > p( - 1) = {( -1 )}^{2} - 2 \times ( - 1) + 1 \\ = > p(x) = 1 + 2 + 1 \\ = > p(x) = 4$

Answer 2

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