mia9372
mia9372
05-12-2019
Mathematics
contestada
1. Solve x2 - 81 = 0.
Respuesta :
PollyP52
PollyP52
05-12-2019
Answer:
x = -9, 9.
Step-by-step explanation:
x^2 - 81 = 0
x^2 = 81
x = -9, 9.
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