Oblicz wyrazenia algebraiczne a)(2x-1)^2-4(x-3)(x+3) b)(5a+1)^2+(5a-1)^2-(5a+1)(5a-1)-25a^2 c)(x+2y)^2-(x+2y)(x-2y)+(2x-2y)^2+4xy d)(a-2b)(3a+b)-3(a-b)^2
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a)(2x-1)^2-4(x-3)(x+3)=4x-4+4x-12-4x+12
b)(5a-1)^2+(5a-1)^2-(5a+1)(5a-1)-25a^2=10a-2+10a-2-25a^2+1-625a
c)(x+2y)^2-(x+2y)(x-2y)+(2x-2y)^2+4xy=2x+4y-x^2+4y^2+4x-4y+4xy
Nwm czy dodać ale to chyba sam potrafisz Pozdro ;p
Rozwiązanie jest w załączniku.