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3a^2-2a dla a=-1/3
3*(-1/3)^2 -2* 1/3=
=3*1/9 -2* 1/3=
=3/9 -2/3=
=1/3 - 2/3=
= - 1/3
Odp.C.
2.
(4x-3) - (2+x)=
=4x-3-2-x=
=3x-5
Odp.D.
3a² - 2a dla a= -1/3
3 *(1/3)² - 2 * 1/3 = 3*1/9 - 2/3= 3/9 -2/3 = 3/9 - 6/9 = -3/9= -1/3
Odp: C.
Zad2
(4x-3) - (2+x)= 4x-3 -2-x=3x-5
Odp: D.