Question

3x^2+17x+18=-2 ayudenme

Answer 1

3x² +17x + 18 = - 2

3x² + 17x +18 +2 = 0

3x² + 17x + 20 = 0

a) 3

b)17

c) 20

Formula General:

[-b±√b² - 4.(a).(c)] / 2.(a)

Reemplazamos:

√17² - 4.(3).(20)

√289 - 12.(20)

√289 - 240

√49 = 7


Reemplazamos:

X1 = (- b + 7)/2.a

X1 = (- 17 + 7)/6

X1 = -10/6

Simplificamos:

➡X1 = - 5/3


X2 = (- 17 - 7)/6

X2 = - 24/6

➡X2 = - 4


Soluciónes finales:

X1 = - 5/3

X2 = - 4


Saludos.