naldupienaar naldupienaar

27-04-2018
Mathematics

contestada

x^2 -x-20=0 Solve the equation by completing the square

Respuesta :

tomrocks2004 tomrocks2004

27-04-2018

x=4
first you add 20 to both sides
then you try all numbers that square to get less than 20 and 4 is the correct one

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