Question

Ajutați-ma va rog.....

Answer 1

$x_1 - x_2 = -11$
$x_1 = x_2 - 11$

$x_1 + x_2 = -3$
$x_2 + x_2 - 11 = -3$
$2x_2 = 8 =\ \textgreater \ x_2 = 4$
$x_1 = 4 - 11 = -7$

$x_1 * x_2 = q$
$4 * (-7) =q =\ \textgreater \ q=-28$

Answer 2

x²+3x+q=0
x₁+x₂=-b/a=-3
x₁x₂=c/a=q
x₁-x₂=-11
x₁=-11+x₂
-11+x₂+x₂=-3
2x₂=8
x₂=4
x₁=-11+4=-7
x₁x₂=4·(-7)=-28