1. (a+6)²=2.(c-8)²=3.(7y+3)²=tolong bantu ya terimakasih:3​

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1. (a+6)²=2.(c-8)²=3.(7y+3)²=tolong bantu ya terimakasih:3​

Jawaban:

1. (a+6)² = (a+6)(a+6)= a²+6a+6a+36 = a²+12a+36

2. (c-8)² = (c-8)(c-8) = c²-8c-8c+64 = c²-16c+64

3. (7y+3)² = (7y+3)(7y+3) = 49y²+21y+21y+9 = 49y²+42y+9