Question

5 X elevado a 2 - 11×2=0

Answer 1

5 X elevado a 2 - 11×2=0

5x² - 11x + 2 = 0

a = 5

b = - 11

c = 2

Δ = b² - 4ac

Δ = (-11)² - 4(5)(2)

Δ = + 121 - 40

Δ = + 81 ----------------------->√Δ = 9 (porque √81 = 9)

se

Δ > 0 ( DUAS raizes diferentes)

(baskara)

( - b + - √Δ)

x = ----------------------

(2a)

x' = -(-11) - √81/2(5)

x' = + 11 - 9/10

x' = +2/10 ( diivde AMBOS por 2)

x' = 1/5

e

x'' = -(-11) + √81/2(5)

x'' = + 11 + 9/10

x'' = + 20/10

x'' = 2

assim

x' = 1/5

x'' = 2