mariah1066 mariah1066

23-10-2019
Mathematics

contestada

Solve by completely the square x^2-8x-20=0

Respuesta :

benjaminhadley benjaminhadley

23-10-2019

Answer:

x=5

Step-by-step explanation:

x^2 is 1

Answer Link

Аноним Аноним

23-10-2019

Answer:

x = -2, 10.

Step-by-step explanation:

x^2-8x-20=0

(x - 4)^2 - 16 - 20 = 0

(x - 4)^2 = 36

x - 4 =+/-sqrt36

x = 4+6 , 4 - 6

x = -2,10

Answer Link

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