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On the simplification of mathematical integral in Grade Seven~~~~ I want 20 simplified calculation problems of integral in seventh grade mathematics, that is to say: the square of a + {A-D + [A-D]} - B, similar problems had better have square or cube, remember! Do not use the problem ~ ~ ~ and have the answer! I really get every point The world is really changing now. It's strange not to save money. Well, I'll just add more next time
1 a+[a+b+c]-[b-a]=3a+c
2 a×{b+c}-a[b-c]=2ac
3 {[a÷b]×{b÷a+1]}×{b÷a}=1
4 a+b-{c×2a}-ac+3[ab+ac}=a+b+3ab
5 {a+b+c}²+1=a²+b²+c²+2ab+2ac+2bc+1
6 {a+b}{a-b}+2a{3b-2b]=a²+b²-2ab
Sweat played so long, finally played out, give a score
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