Question

−2x^2+72=0
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Answer 1

- 2x² + 72 = 0
2x² - 72 = 0
2x² = 72
x² = 36
x = 6
x = - 6

Answer 2

спасибки

Answer 3

$- 2x^{2} +72=0; -2 x^{2} =-72; 2 x^{2} =72; x^{2} = frac{72}{2} ; x^{2} =36; x= sqrt{36} ;x= 6$ ; -6; Ответ:х=6;-6.