Matee!!! :D

[alicee:3]

31-(43-3^2-8)+2^4-3x2^2+7=

V(1+1/4)x[(2/5+3/4-1)x(1/4+5/2+7/12)+9/5x1/6]=

grazieee

[Ali Q]

Soluzione:

1) 31-(43-3^2-8 )+2^4-3x2^2+7=
= 31-(43-9-8 )+8-3x4+7=
= 31 - 26 + 8 - 12 + 7 = 8

2) V(1+1/4)x[(2/5+3/4-1)x(1/4+5/2+7/12)+9/5x1/6]=
= V(4/4 +1/4) x [(8 +15 -20)/20 x(3+30+7)/12 +3/10]=
= V 5/4 x (3/20 x40/12 +3/10)=
= V 5/4 x (1/2 + 3/10) =
= V 5/4 x (5/10 + 3/10) =
= V 5/4 x 8/10 =
= V 5/4 x 4/5 = V 1 = 1

Ciao!