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2(3x-1)(2y+1)-11=? Help please idk cum inmultesc parantezele


Răspuns :

(6x-2)(2y+1)-11=12xy+6x-4y-2-11=12xy+6x-4y-13

2(3x-1)(2y+1)-11=(6x-2)(2y+1)-11=2(6xy+3x-2y-1)-11=12xy+6x-4y-2--11=12xy+6x-4y-13.. alt ceva nu poti face nimic.. nu poti scoate in fata nu ai termeni asemenea+ pte ai gresit ceva|?