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Math
Julia

Simplify each of the following:20. a (b -c)+ b(c-a) + c(a - b)21. alb-c)-b(c-a)-c(a - b)22. 3x2 + 2(x + 2) - 3x (2x +1)23. x(x + 4) + 3x (2x2 - 1)+ 4x2 + 424. 2x2 + 3x (1-2x3 + x (x +1)25. aPb(a - bº) + ab? (4ab-2a?) - a’b(1-25)26. 4st(s -t)-6sº(t -t?)-3t(2s2 - s) + 2st (s – t) ​

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