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Va rog este urgent!!!!!!!!
a) -3a+5a-8a+13a-11a+4a=
b) (2a+3b)-(4a-5b)-(-3a+4b)=
c) 4√12a-5√27a+3√48a-3√3a=


Răspuns :

a) -3a+5a-8a+13a-11a+4a=0
b) (2a+3b)-(4a-5b)-(-3a+4b)=2a+3b-4a+5b+3a-4b=a+4b
c) 4√12a-5√27a+3√48a-3√3a=
=8√3a-15√3a+12√3a-3√3a=
=8√3a-15√3a+12√3a-3√3a= 2√3a



a)-3a+5a-8a+13a-11a+4a= 0
b)(2a+3b)-(4a-5b)-(-3a+4b)= 2a+3b-4a-5b-(-3a+4b)
=-4a+2b
c)4*2radical2a-5*3radical3a+3*4radical3a-3radical3a
=8radical2a-15radical3a+12radical3a-3radical3a
=2radical3a
sper ca te-am ajutat