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Катя24082000
@Катя24082000
October 2021
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Разложите на множители!!!прошу вас
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(z+3)²+x²-x(2z+6)=
=z²+6z+9+x²-2zx-6x=
=(z²-2zx+x²)+(6z-6x)+9=
=(z-x)²+6(z-x)+3²=
=(z-x)²+2(z-x)*3+3²=
=(z-x+3)²
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Answers & Comments
Verified answer
(z+3)²+x²-x(2z+6)==z²+6z+9+x²-2zx-6x=
=(z²-2zx+x²)+(6z-6x)+9=
=(z-x)²+6(z-x)+3²=
=(z-x)²+2(z-x)*3+3²=
=(z-x+3)²