cadan13crane cadan13crane

15-03-2021
Mathematics

contestada

what is the answer for 9k^2=225

Respuesta :

Witcher3 Witcher3

15-03-2021

9k² = 225

k² = 225 : 9

k² = 25

k = -5 and k = 5 because :

(-5)² = (-5) * (-5) = 25

5² = 5 * 5 = 25

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