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2a•3a=6a (3a2)3=27a6 a4÷a2=2a (a+b)2=a2+ab+b2
(ab)2=ab2 5a2﹣3a2=2 a(b+2)=ab+2 5a3•3a2=15a5
3a+4b=7ab 7a﹣3a=4 3a+a=3a2 3a2b﹣4a2b=﹣a2b
3a﹣2a=a 2a•3a=6a a2•a3=a6 (3a)2=6a2
2a•3a=6a (3a2)3=27a6 a4÷a2=2a (a+b)2=a2+ab+b2
3x2•2x=6x3 x6÷x3=x2 (3a)2=3a2 (a+b)2=a2+b2