Question

Ecuación cuadrática incompleta

a) ײ + 11× + 18 = 0

b) 8ײ + 16× = 0

c) 2ײ - 9× = 0

d) 8ײ - × = 0

e) ײ + 6× = 0​

Answer 1

Explicación paso a paso:

a) x² + 11x + 18 = 0

(x + 9) (x + 2) = 0

x + 9 = 0 v x + 2 = 0

x = -9 x = -2

b) 8x² + 16x = 0

Divides entre 8:

x² + 2x = 0

x(x + 2) = 0

x = 0 v x + 2 = 0

x = -2

c) 2x² - 9x = 0

x(2x - 9) = 0

x = 0 v 2x - 9 = 0

x = 9/2

d) 8x² - x = 0

x(8x - 1) = 0

x = 0 v 8x - 1 = 0

x = 1/8

e) x² + 6x = 0

x(x + 6) = 0

x = 0 v x + 6 = 0

x = -6