Question

Fórmula de Bháskara
x(x + 2) + 2 = 10

Answer 1

X(x+2)+2 =10

X²+2x +2 = 10

X²+2x +2 -10= 0

X² +2x -8 = 0

A = 1

B= 2

C = -8

∆ = b² -4.a.c

∆ = 2² -4.1.(-8)

∆ = 4 + 32

∆ = 36

X = -b±√∆ / 2.a

X = -2±√36/2

X1 = -2 +6 /2

X1 = 2

X2= -2 -6/2

X2= -4

S= { -4; 2}