Odpowiedź:
[tex]1.\ \ (1-x)^2=1^2-2\cdot1\cdot x+x^2=1-2x+x^2\\\\2.\ \ (4x-1)^2=(4x)^2-2\cdot4x\cdot1+1^2=16x^2-8x+1\\\\3.\ \ przyklad\ \ taki\ \ sam\ \ jak\ \ wy\.zej\\\\4.\ \ (x-2)(x+2)=x^2-2^2=x^2-4\\\\5.\ \ (3a+4)^2=(3a)^2+2\cdot3a\cdot4+4^2=9a^2+24a+16\\\\6.\ \ (8x-3a)(8x+3a)=(8x)^2-(3a)^2=64x^2-9a^2\\\\7.\ \ (6+5a)(6-5a)=6^2-(5a)^2=36-25a^2[/tex]
[tex]Zastosowane\ \ wzory\\\\(a-b)^2=a^2-2ab+b^2\\\\(a+b)^2=a^2+2ab+b^2\\\\(a-b)(a+b)=a^2-b^2[/tex]
