Question

URGENTEE

Answer 1

x^2 - x - 30 = 0

DELTA = b^2 - 4 * a * c
a= 1
b= -1
c= -30

DELTA = (-1)^2 - 4 * 1 * (-30)
DELTA = 1 + 120
DELTA = 121


BHASKARA: -b +/- \/delta / 2 * a

x = -(-1) +/- \/121 / 2 * 1
x = 1 +/- 11 / 2

x1 = 1 + 11 / 2
x1 = 12/2
x1 = 6


x2 = 1 - 11 / 2
x2 = -10/2
x2 = -5

Portanto, as raizes são: {6, -5}
ALTERNATIVA (B)