b b a b b
a = a * c-b = a(c+b)
c+b c+b c-b c2=(b)2
a = a * b+c = a b+c
b-c b-c b+c (b)-(c)2
a = a * b+c = a b+c
b-c b-c b+c (b)-(c)2
1) 7= 7*3 =1 3 = 7 3
3 3 3 (3) 3
3 3 3 (3) 3
2) 5 = 5 = 5 = 5 * 5(3-2 2) = 5(3-2 2) =5(3-2 2)=5(3-2 2)=-(3 2 2)
3-8 3-8-2 3+2 2 2 3+2 2 3 2-2 2 3-4(2) 3-8 -5
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