PILNE!!!
Oblicz :
a) √3(√12-2√48-4√27)=
b)(√80+√500-4√4500) : 5=
zad 49 ze str. 43 ćwiczenia POLICZMY TO RAZEM 2 ;)
z góry dzięki ^^
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a)
√3(√12-2√48-4√27)=
=√3(2√3-8√3-12√3)=
=√3·(-18√3)=
=-18·3=
=-54
b)
(√80+√500-4√4500)/5=
=(4√5+10√5-120√5)/5=
=(-106√5)/5=
=-21,2√5
a) ...√36 - 2√144 - 4√81 = 6 - 24 - 36 = -54
b) (4√5 + 10√5-30√5) / 5 = -15√5 : 5 = -5√5