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a×c=12
b×d=25
2ac+3bd=
a×b×c×d=


Răspuns :

2ac+3bd=2*12+3*25=24+75=99
a*b*c*d=12*25=300
2ac+3bd=12×2+25×3=24+75=99
a×b×c×d=12×25=300