Răspuns :
a) √5•(4√2-3√5)-2(2√10+3)=
=4√10-15-4√10-6
=-21
b) 4√3 (2√75-√27+3√/12)-2√3√48=
=4√3 (10√3-3√3+6√3)-2√3x4√3
=4√3x13√3-2×3×
=4×3×13-24
=156 - 24
=132
a) √5•(4√2-3√5)-2(2√10+3)=
=4√10-15-4√10-6
=-21
b) 4√3 (2√75-√27+3√/12)-2√3√48=
=4√3 (10√3-3√3+6√3)-2√3x4√3
=4√3x13√3-2×3×
=4×3×13-24
=156 - 24
=132