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a3+a3=a6 4ab÷2a=2ab a3•a4=a7 (3x2)3=9x6
5x+3x=8 2x+3y=5xy 3ab﹣ab=2ab ﹣(a﹣b)=﹣a﹣b
2x+y=2xy (2ab)2=4a2b2 (-x-y)(x+y)=x2-y2
2a×3a=6a (x-2)(x-3)=x2-6 (x-2)2=x2-4 (ab3)2=a2b6
3a+4b=12a (ab3)2=ab6 (5a2﹣ab)﹣(4a2+2ab)=a2﹣3ab x12÷x6=x2
5a2﹣3a2=2 2x2+3x2=5x4 3a+2b=5ab 7ab﹣6ba=ab
3x-5x=2x 3x2+x=4x3 -7a+4b=-11ab -3ab2-ab2= -4ab
x2·x3=x6 (ab)3=a3b3 3a+2a=5a2 (x³)²= x5
3a+2b=5ab 3a2b-3ba2=0 3x2+2x3=5x5 3m4-2m4=1
3x2y﹣2x2y=x2y 5y﹣3y=2 ﹣3x+5x=﹣8x 3a+2b=5ab
3x+2y=5xy 4x﹣3x=1 2ab﹣ab=ab 2a+a=2a2
5a2﹣3a2=2 2x2+3x=5x3 3a+2b=5ab 6ab﹣7ab=﹣ab
2a3-a3=2 a3-a2=a 3ab-ba=2ab x+x=x2
(ax2-bx+c)′=a(x2)′+b(-x)′ (sinx-2x2)′=(sinx)′-(2)′(x2)′ (cosx·sinx)′=(sinx)′cosx+(cosx)′·cosx
3a+2b=5ab 5y2-3y2=2 2ab-ab=ab 3x2y-5x2y=2x2y
3a2•a3=3a6 5x4﹣x2=4x2 (2a2)3•(﹣ab)=﹣8a7b 2x2÷2x2=0
4a+b=4ab 23x+4=27x ﹣(3x﹣2)=2﹣3x ﹣2(x﹣4)=﹣2x+4
3x+2x2=5x3 2a2b﹣a2b=1 ﹣ab﹣ab=0 ﹣x2y+yx2=0
x﹣2x=﹣x 2x﹣y=xy x2+x2=x4 (x﹣l)2=x2﹣1