redukcja:
b) 3x-[4y-7(5x-2y)-(x-y)-3(-4y-2x)]
d) (4y-5y^^^)+(-7+2y-y^^)-(7y^^^|2-3y)
j) (a-5b)(2a+b)(2a-3b)
^^^ - sześcian
^^ - kwadrat :)
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b) 3x-[4y-7(5x-2y)-(x-y)-3(-4y-2x)] =3x-[4y-35x+14y-x+y+12y+6x] = 3x-[-30x+31y]=3x+30x-31y=33x-31y
d) (4y-5y^^^)+(-7+2y-y^^)-(7y^^^|2-3y)=4y-5y^^^-7+2y-y^^-7y^^^|2+3y =-8i1/2y^^^-y^^+9y-7
j) (a-5b)(2a+b)(2a-3b)=(2a^^+ab-10ab-5b^^)(2a-3b)=(2a^^-9ab-5b^^)(2a-3b) = 4a^^^-6a^^b-18a^^b+27ab^^-10ab^^+15b^^^ = 4a^^^-24a^^b+17ab^^+15b^^^