Proszę pilnie o pomoc, bardzo pilnie 1) 3 (a² - b²) ² 2) 3 (a - 2b²) ² 3) 3 ( a + 2b) ² 4) 3a² - 12ab + 12ab²

1. [latex]3(a^2-b^2)^2=3(a^4-2a^2b^2+b^4)=3a^4-6a^2b^2+3b^4[/latex] 2. [latex]3(a-2b^2)^2=3(a^2-4ab^2+4b^4)=3a^2-12ab^2+12b^4[/latex] 3. [latex]3(a+2b)^2=3(a^2+4ab+4b^2)=3a^2+12ab+12b^2[/latex] 4. [latex]3a^2-12ab+12b^2= 3(a^2-4ab+4b^2)=3(a-2b)^2[/latex]