Question

-X elevado a 2 +13X-36=0?

Answer 1

Resposta:

9 e 4

Explicação passo-a-passo:

-X^2 +13X -36 = 0 (x-1)

X^2 - 13X +36 = 0

X= (13 +/- raiz((-13)^2 - 4.1.36))/(2.1)

X= (13 +/- raiz(169 - 144))/2

X= (13 +/- raiz(25))/2

X= (13 +/- 5)/2

X1= (13+5)/2 = 9

X2= (13-5)/2 = 4

Abs :)