Răspuns :
x=-3
y+z=70
xt-xp=252
xy+xz=x(y+z)=-3•70=-210
xt-xp=x(t-p)
-3•(t-p)=252
t-p=-84
y+z=70
xt-xp=252
xy+xz=x(y+z)=-3•70=-210
xt-xp=x(t-p)
-3•(t-p)=252
t-p=-84
xt - xp = 252
x (t - p) = 252
-3 ( t - p) = 252
t - p = 252 ; (-3)
t - p = - 84
xy + xz = x ( y + z) = - 3 x 70 = - 210
x (t - p) = 252
-3 ( t - p) = 252
t - p = 252 ; (-3)
t - p = - 84
xy + xz = x ( y + z) = - 3 x 70 = - 210