Question

Factorise a2+b2-2ab+2bc-2ca

Answer 1

${a}^{2} + {b}^{2} - 2ab + 2bc - 2ca$
$= {(b - a)}^{2} + 2c(b - a)$
$= (b - a)(b - a + 2c)$

Answer 2

Answer:

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Step-by-step explanation:

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