October 2018 2 125 Report

a) a(a+b) + a(a-b)+b(b+a)+b)+b(b-a)

b) 5a(a-2) + 2a(a+5)

c) 3(a + 2b - 3c) - 2(a-2c) + 5 (c-b) - (a+b)

d) 8x(x+y) - 2y(y-x) + 0,5(6x^2 + 8x^2) -2 (y^2 + 5xy)

e)

f)

g) 0,2 (5a + 10 b ) - 7 (0,1a - b) + a - b


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