August 2018 3 19 Report
Zapisz jak najprościej :
a) 2a(b-3)-2b(a-3)=
b) a(a+b)+a(a-b)+b(b+a)+b(b-a)=
c) 5a(a-5)a+2a(a+5)=
d) 3(a+2b-3c)-2a(a-2c)+5(c-b)-(a+b)=
e) 8x(x+y)-2y(y-x)+½(6x²+8x²)-2(y²+5xy)=
h) 0,2(5a+10b)-7(0,1-b)+a-b=
g) ⅓a(a+1)-4(⅓ a² -1/12a)-a(1-a)=

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