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(ab)2=ab2 5a2﹣3a2=2 a(b+2)=ab+2 5a3•3a2=15a5
3a+2a=5a2 3a﹣a=2 2a3+3a2=5a5 ﹣a2b+2a2b=a2b
3a+4b=7ab 7a﹣3a=4 3a+a=3a2 3a2b﹣4a2b=﹣a2b
a+a=2a2 a5﹣a2=a3 3a+b=3ab a2﹣3a2=﹣2a2
3a﹣2a=a 2a•3a=6a a2•a3=a6 (3a)2=6a2
3a+2a=5a2 3a﹣a=3 2a3+3a2=5a5 ﹣a2b+2a2b=a2b
2a2+3a2=5a4 5a2-2a2=3 a3×2a2=2a6 3a6÷a2=3a4
3a+b=3ab 3a﹣a=2 2a3+3a2=5a5 ﹣a2b+2a2b=a2b
2+a=2a 2a﹣3a=1 3a+2b=5ab 5ab﹣ab=4ab
6a﹣5a=1 2(a+b)=2a+b a+2a2=3a3 ﹣(a﹣b)=﹣a+b
a+2a=3a2 a2+a3=a5 a3÷a=3 (-a)3=a3