1. (4+x)² =
2. (-8+x)² =
3. (a+3)² =
4. (b+2)² =
5. (3b+4)² =
6. (4a+7)² =
7. (x+2y)² + (x+y) (2x+2y) =
8. a²+2ab+b² =
9. 16a²+16ab+4b² =
10. a²+16ab+64b² =
11. 36a²+48ab+16b² =
12. 64a²+48ab+9b² =
13 9a²+18ab+9² =
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1. (4+x)² =16+8x+x²
2. (-8+x)² =64-16x+x²
3. (a+3)² =a²+6a+9
4. (b+2)² =b²+4b+4
5. (3b+4)² =9b²+24b+16
6. (4a+7)² =16a²+56a+49
7. (x+2y)² + (x+y) (2x+2y) =x²+4y+4y²+2x²+2xy+2xy+2y²=3x²+6y²+4xy+4y
8. a²+2ab+b² =(a+b)²
9. 16a²+16ab+4b² =(4a+2b)²
10. a²+16ab+64b² =(a+8b)²
11. 36a²+48ab+16b² =(6a+4b)²
12. 64a²+48ab+9b² =(8a+3b)²
13 9a²+18ab+9b² =(3a+3b)²