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(4x-3)~2-(3x-2)~2+(2x+5)~2
~2= la puterea a doua


Răspuns :

(4x-3)~2-(3x-2)~2+(2x+5)~2=
=16x
~2-24x+9-(9x~2-12x+4)+4x~2+20x+25=
=20x
~2-4x+34-9x~2+12x-4=
=11x
~2+8x+30   
Nu stiu daca am gresit ceva, dar nu mi-a dat cum spui tu