Question

Reduceti termenii asemenea :
a) 5a+10a-12a - 4a +5a
b) x - 6x + 10x - 4x - 3x
c) 7ab - 4ab + 13ab + ab- 10ab
d) 1 supra 2 xy + 1 supra 3 xy + 1 supra 6 xy
e) v-radical , nu pot pune semnul
V 2abc - 2V2abc + V2 abc

Dau 15 puncte!!!!!vă rog mult!

Answer 1

a) 
 5 a + 10 a - 12 a - 4 a +5 a =  4 a 
 = 15 a - 12 a - 4 a + 5 a=
= -  a + 5 a=
=  4 a
b)
x - 6 x + 10 x - 4 x - 3 x = - 2 x
= 5 x - 7 x =
= - 2 x
c)
7 a b - 4 a b + 13 a b + a b - 10 a b=  7a b
= 3 a b + 14 a b - 10 a b =
= 17a b - 10 a b =
= 7 a b  
d)
1 / 2 xy + 1/3 xy + 1 / 6 xy= 1/xy
= 3/6xy + 2/6xy + 1/6xy = 
= 6/6xy=
= 1/xy
e)

√ 2abc - 2√2abc + √2abc = 0
= - √2abc + √2abc=
= 0