Question

найдите два корня уравнения |у|×|-0,9|=|-0,72|

Answer 1

|y| * |-0.9| = |-0.72|
|y| * 0.9 = 0.72
|y| = 0.72 / 0.9
|y| = 0.8 => y = 0.8 или y = -0.8