Question

ME AJUDEM URGENTEMENTE

Answer 1

b² - 4 * a * c = 0

-20² - 4 * 25 * k = 0

400 - 100k = 0

-100k = -400

k = -400 / -100

k = 4

b² - 4 * a * c = 0

-k² - 4 * 1 * 9 = 0

k² - 36 = 0

k² = 36

k = √36

k = 6

b² - 4 * a * c = 0

-16² - 4 * k * 16 = 0

256 - 64 k = 0

-64 k = -256

k = -256 / -64

k = 4

b² - 4 * a * c = 0

-k² - 4 * 1 * 1 = 0

k² - 4 = 0

k² = 4

k = √4

k = 2

Espero ter ajudado