1. (1+x)2 = 1+2x+x2 2. (2+2x)2 = 4+8x+4x2 3. (2-3x)2 = 4-12x+9x2 4. (8+9x)2 = 64+144x+81x2 5. (0.5-10x)2 = 0.25-10x+100x2 6. (a-b)2 = a2-2ab+b2 7. (a+bx)2 = a2+2abx+b2x2 8. (0.4a+3x)2 = 0.16+2.4x+9x2 9. (3y-2x2)2 = 9y2-12x2y+4x4