square the trinomial
1. (4a+b-c)^2
2. (5x-y+8)^2
3. (x^2+y^2+4)^2
4. (2b-3c+5d)^2
5. (a^2-2a-1)
no nonsense answers pls thank you
1. (4a+b-c)^2
2. (5x-y+8)^2
3. (x^2+y^2+4)^2
4. (2b-3c+5d)^2
5. (a^2-2a-1)
no nonsense answers pls thank you
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1. 16a²+8ab+b²+2bc+8ac+c²