Question

efectuati:
a) 6.5*(1.2-4.(3))-9.9/3+7.4*5-450=
b) (7-radical din 2)(5+ radical din 3) -3radical6 - 4 radical 3 +10(radical din 2-radical din 3)

Answer 1

a) 6,5*(1,2-4,(3))-9,9/3+7,4*5-450=
=6,5*(12/10-39/9)-3,3-413=
=6,5*(108-390/90)-416,3=
=6,5*(-282/90)-416,3=
=-1833/90-416,3=
=-611/30-416,3=
=(-611-12489)/30=
=-13100/30=
=-1310/3=
=-436,(6)

 b) (7-√2)(5+ √3) -3√6 - 4√3 +10(√2-√3) =
=35-5√2+7√3-√6 -3√6 - 4√3 +10√2-10√3) =
=35+5√2-7√3-4√6