Question

X elevado a 2 - 17 x -2= 0 me ajudem!

Answer 1

X² - 17x -2 = 0

a = 1

b = -17x

c = -2

Δ = b²-4.a.c

Δ = (-17)² - 4.1.(-2)

Δ = 289 + 8

Δ = 297

X = -b ± √Δ / 2.a

X = 17 ± √297 /2.1

x = 17 ±  17,2 / 2

x' = 17 - 17,2 /2 = -0,1

x'' = 17 + 17,2= 17,1