Paano mo malulutas ang 8n ^ 2 + 4n-16 = -n ^ 2?

Sagot:

# (- 2 + -2sqrt37) / 9 #

Paliwanag:

# 8n ^ 2 + 4n-16 = -n ^ 2 #

# 9n ^ 2 + 4n-16 = 0 #

#n = (- b + -sqrt (b ^ 2-4ac)) / (2a) #

# = (- 4 + -sqrt (16 + 4 * 9 * 16)) / (2 * 9) #

# = (- 4 + -sqrt (16 + 36 * 16)) / 18 #

# = (- 4 + -sqrt (37 * 16)) / 18 #

# = (- 4 + -4sqrt37) / 18 #

# = (- 2 + -2sqrt37) / 9 #