Question

(3+x) (x-3)-(3-x) ^2​

Answer 1

$(3+x)(x-3)-(3-x)^2=underbrace {(x-3)(x+3)}_{x^2-3^2}-(9-6x+x^2)=\\=x^2-9-9+6x-x^2=6x-18=6, (x-3)$

Answer 2

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Готово!!Удачи:)))

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