Question

a) -5√3 + 7√3+8√3 =
b) 2 √27 - 3√12
c) 6
----- - √108
√3
d) (2√2) la a doua : (-2) la a doua
sunt urgente !!!

Answer 1

a)√3(-5+7+8)=√3*10.
b)2*3√3-3*4√3=√3(6-12)=-6√3
c)6-√108=6-6√3=6(1-√3)
d)(2√2)²/(-2)²=4*2/4=2

Answer 2

a) -5√3 + 7√3+8√3 = 15√3 -5√3 =10√3


b) 2 √27 - 3√12 =2√(3³)-3√(2²×3)=6√3-6√3=0

c)6/√3-√108=

=6/√3-√(2²×3³)

=6/√3-6√3

=6√3/3-6×√3×√3

=2√3-18

=2(√3-9)

d)(2√2)²/(-2)²=4×2/4=2