Oblicz
3(x-2)^2
(3x-2)^2-(4x+3)^2
(x^2-y)(x^2+y)
źródło:
3(x-2)^2=3(x^2-2*x*2+2^2)=
=3(x^2-4x+4)=3x^2-12x+12
(3x-2)^2-(4x+3)^2=
=9x^2-12x+4-(16x^2+24x+9)=
=9x^2-12x+4-16x^2-24x-9=
=-7x^2-36x-5
(x^2-y)(x^2+y)=(x^2)^2-y^2=x^4-y^2