Question

f(x) = - x² - 6x - 9 calcule o valor de delta.

Answer 1

delta= B^(2)- 4AC
delta= -6^(2)-4×(-1)×-9
delta = 36-36
delta =0

Answer 2

a = -1 , b = - 6 , c = - 9

delta  = b² - 4 x a x c

delta = (-6)² - 4 x (-1) x (-9)

delta = 36 - 36

delta = 0

x = -b + 0u - $\sqrt{delta}$ / 2 * a

x = -(-6) + ou - $\sqrt{0}$ / -2

x1= 6 + 0 / -2

x1= 6 / -2

x1 = -3
 
x2 = 6 - 0 / -2

x2 = 6 / -2

x2 = -3

v = {-3,-3}