Question

Qual a fórmula de bháskara de 7x²-21x+14=0 ?????

Answer 1

\dfrac{26!}{(26-2)!}

Answer 2

-B +-√B²-4AC / 2A

B² - 4AC = 21² - 4*7*14 = 441 - 392 = 49

-B +- √49 / 2A = 21 +- 7 / 2*7

21 + 7 / 14 = 28 / 14 = 2
21-7 / 14 = 14 / 14 = 1