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RLA1
@RLA1
September 2021
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преобразуйте в произведение выражение;а)x^+y^+2xy-1;б)a^+b^-2ab-25:
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Verified answer
а)x^2+y^2+2xy-1=(x^2+2xy+y^2)-1=(x+y)^2-1=(x+y+1)(x+y-1)
б)a^2+b^2-2ab-25=(
a^2+b^2-2ab)-25=(a-b)^2-25=(a-b-5)(a-b+5)
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Verified answer
а)x^2+y^2+2xy-1=(x^2+2xy+y^2)-1=(x+y)^2-1=(x+y+1)(x+y-1)б)a^2+b^2-2ab-25=(a^2+b^2-2ab)-25=(a-b)^2-25=(a-b-5)(a-b+5)