Question

решите 2 уравнения
1) 9-x^2=0
2) x^2-8=0

Answer 1

1) 9 - x² = 0
- x² = - 9
x² = 9
x = 3
x = - 3

2) x² - 8 = 0
x² = 8
x = 2√2
x = - 2√2