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Mathematics, 19.10.2021 01:20 bandzlvr

(x+3)²+(2-x).(2+x)=x²+2.x.3+3²+2²-x ²=x²+6x+9+4-x²=

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(x+3)²+(2-x).(2+x)=x²+2.x.3+3²+2²-x ²=x²+6x+9+4-x²=...
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