1. (a-b)2=a2-2ab+b2
2. (x-4)2=x2-8x+16
3. (1-m)2=1-2m+m2
4. (6-p)2=36-24p+p2
5. (2a-3)2=4a2-12a+9
6. (4x-2y)2=16x2-16xy+4y2
7. (a-b2)2=a2-2ab2+b4
8. (x3-y)2=x6-2x3*y+y2
9. (m3-n2)2=m6-2m3*n2+n4
10. (a3-2b)2=a6-4ba3+4b2
11. (a3-ab)2=a6-2a4b+a2b2
12. (x4-y5)2
13. (x3-y2z)2=x6-2x3y2z+y4z2
14. (0,1a+3a2b)2=0.01a2+0.6a3b+9a4b2
15. (1,2xy+0,7xy2)2=1.44x2y2+1.68x2y3+0.49x2y4
16. (x7-xy)2=x14-2x8y+x2y2
17. (a2b-b2a)2=a4b2-2a3b3+b4a2
18. (6p-7q3)2=36p2-84pq3+49q6
19.(ab-c)2=a2b2-2abc+c2
20. (0.2x-0.8y)2=0.04x2-0.32xy+0.64y2
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