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2a•3a=6a (3a2)3=27a6 a4÷a2=2a (a+b)2=a2+ab+b2
3a+4b=7ab 7a﹣3a=4 3a+a=3a2 3a2b﹣4a2b=﹣a2b
(a+3b)(3a﹣b) (3a﹣b)(3a﹣b) (3a﹣b)(﹣3a+b) (3a﹣b)(3a+b)
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
a3•a3=a9 3a3÷2a=a3 (a2)3=a6 2a+3a2=5a3