October 2018 1 12 Report

Proszę o rozwiązanie wzorów skróconego mnożenia.


W nawiasie kwadratowym "[]" są liczby pod pierwiastkiem

1. (y-5x)^2=
(3c+d)^2=
2. (7x+[2])*(7x-[2])=
([5]-3y)*([5]+3y)=
3. 2(m+3n)^2*(m-3n)^2+(m+3n)*(m-3n)=
3(a-2b)^2*(a+2b)^2+(a-2b)*(a+2b)=
4. (2x+1)^3=
(1+2y)^3=
5. (3-y)^3=
(1+2y)^3=
6. (4a+2,5b)^2=
(1,5x+2y)^2=
7. (5j-k)*(5j+k)-(j-k)^3=
(5m+n)895m-n)-(m-n)^3=


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