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(8xyz-3ײ-yz)-(xyz-ײyz)+12=8xyz-3ײ-yz-xyz-x²yz=7xyz-3ײ-yz-x²yz
9a²+[7a²-2a-(a²-3a)]+(-5+a²)=9a²+7a²-2a-a²+3a-5+a²=16a²+a-5
nie pamietam jak sie robiło z nawiasami
3,5x²+0,6y³+2,5
(8xyz-3ײ-yz)-(xyz-ײyz)+12=
8xyz-3x²-yz-xyz+x²yz+12=
7xyz-3x²-yz+x²yz+12
9a²+[7a²-2a-(a²-3a)]+(-5+a²)=
9a²+[7a²-2a-a²+3a]-5+a²=
9a²+7a²-2a-a²+3a-5+a²=
16a²-a-5