1.Doprowadź do najsprostszej postaci:
-3+2a²-2b+3b²+2-2b+2a=
2.(a+3)²+(3a-1)²-2(a-3)(a+3)=
3.(-3x-3y)²-4(-5x-1)(1-3x)=
dla X= -1 , dla Y= 1
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1.3b²+2a
2.8a²+34
3.56
tak mi się wydaje
1.-1+2a2-4b+3b2+2a
2.(a2+9+9a2-1)-2(a2+3a-3a-9)=a2+9+9a2-1-2a2+18=8a2+26
3.(9x2+9y2)-4(-5x+15x2-1+3x)=9x2+9y2+20x-60x2+4-12x=9*(-1)kwadrat+9*1kwadrat+20*(-1)-60*(-1)kwadrat+4-12*(-1)=9*1+9*1-20-60*1+4+12=9+9-20-60+4+12=-46