Quines són les intercepcions de y = 2x ^ 2-10x-1?

Quines són les intercepcions de y = 2x ^ 2-10x-1?
Anonim

Resposta:

# y = -1 #

# x_1 = 0,098 #

# x_2 = 5.098 #

Explicació:

# y = 2x ^ 2-10x-1 #

# "per a x =" 0 "" rArry = -1 #

# "per a y =" 0 #

# 2x ^ 2-10x-1 = 0 #

# Delta = sqrt (100 + 4 * 2 * 1) "" Delta = sqrt (108) Delta = 10,39 #

# x_1 = (10-10,39) / 4 #

# x_1 = (0,39) / 4 #

# x_1 = 0,098 #

# x_2 = (10 + 10,39) / 4 #

# x_2 = (20,39) / 4 #

# x_2 = 5.098 #