Помогите 333(2,4,6,8)

Question

Помогите 333(2,4,6,8)

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Answer 1

2)3a^2+6ab+b^2
4)5x^2+10xy+2y^2
6)x^2+2xc+c^2
8)0.2a^2+0.04ab+b^2