Question

4y^2=81 помогите (((

Answer 1

4у^2 = 81
y ^2 = 81 : 4
y^2 = 20,25
y1 = 4,5
y2 = - 4,5

Answer 2

Спасибо)))

Answer 3

Ок!

Answer 4

у² = ⁸¹/₄
у₁ = -⁹/₂
у₂ = ⁹/₂

Answer 5

Спасибоо))

Answer 6

)))