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14-06-2017
Mathematics

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What number would you add to both sides of x^2 – 20x = 5 to complete the square?

Respuesta :

ghanami ghanami

14-06-2017

hello :
x^2 – 20x = 5
x²-2(10)(x) =5
(x²-2(10)(x) +10²) -10² = 5
(x-10)² -10² = 5

number would you add is : 10² =100

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