Question

Ajutați ma va rog! De preferabil sa le scrieți pe o foaie si după sa faceți poza. Mulțumesc

Answer 1

10
a) (4√3+√32):4-(√8+√3)=(4√3+4√2):4-(2√2+√3)=√3+√2-2√2-√3=-√2
b) (2√32-10√14):(2√2)-(3√90-√3240):(3√5)=
= (8√2-10√14):(2√2)-(9√10-18√10):(3√5)=
= 4-5√7-(-9√10):(3√5)= 4-5√7+3√2
c)(5√6-√96):√3-√48×(√24+4√6)=
=(5√6-4√6):√3-4√3×(2√6+4√6)=
=√6:√3-4√3×6√6=
=√2-24√18=
=√2-72√2=
=-71√2
d)(3√14-√350):√7-(2√486-√294):√3=
=(3√14-5√14):√7-(18√6-7√6):√3=
=-2√14:√7-11√6:√3=
=-2√2-11√2=
=-13√2

11.
a){4√2+4×[3√3+3×(3√2-√3)]}:10-√2=
={4√2+4×[3√3+9√2-3√3)]}:10-√2=
=(4√2+4×9√2):10-√2=
=(4√2+36√2):10-√2=
=40√2:10-√2=
=4√2-√2=
=3√2

b)3√5-7×{√2+[20√5-2×(√5-9√2):18]}=
=3√5-7×{√2+[20√5-2√5+18√2):18]}=
=3√5-7×[√2+(18√5+18√2):18]=
=3√5-7×(√2+√5+√2)=
=3√5-7×(2√2+√5)=
=3√5-14√2-7√5=
=-14√2-4√5

c)√63×[7√27-3(7√3+√28)]+16=
=3√7×[21√3-3(7√3+2√7)]+16=
=3√7×(21√3-21√3-6√7)+16=
=3√7×(-6√7)+16=
=-18×7+16=-110