Question

5x² - 25x – 2500 = 0

Answer 1

Resposta:

5x² - 25x – 2500 = 0

x² - 5x - 500 = 0

x² + 20x - 25x - 500 = 0

X x (x + 20) - 25x - 500 = 0

X x (x - 20) - 25 ( x + 20) = 0

(x - 20) x (x - 25) = 0

x + 20 = 0

x - 25 = 0

x = -20

x = 25

Answer 2

Resposta:

X1 = -20 e X2 = 25

Explicação passo a passo:

5x² - 25x – 2500 = 0 ÷ 5

x² - 5x – 500 = 0

Δ = b² - 4.a.c

x² + 20x - 25x - 500 = 0

X x (x + 20) - 25x - 500 = 0

X x (x - 20) - 25 ( x + 20) = 0

(x - 20) x (x - 25) = 0

x + 20 = 0

x - 25 = 0

X1 = -20

X2 = 25