Question

7x ao quadrado+13x-2=0 (formula de Bhaskara).

Answer 1

7x² + 13x - 2 = 0

Bhaskara
ax² + bx + c = 0
Δ = (b)² - 4.(a).(c)
Δ = (13)²- 4.(7).(-2)
Δ = 169 + 56
Δ = 225

X1 = (-b + √Δ)/2.a = (-13 + √225)/14 = 2/14 = 1/7
X2 = (-b - √Δ)/2.a = -28/14 = -2

S = (1/7, -2)

Espero ter ajudado ^^