Question

Найдите корни уравнения (4,9 + 3,5х)(7х – 2,8) = 0

Answer 1

(4.9 + 3.5x)(7x - 2.8) = 0
4.9 + 3.5x = 0
3.5x = -4.9
x = -4.9 : 3.5
x_1 = -1.4
7x - 2.8 = 0
7x = 2.8
x_2 = 0.4
Ответ: x_1 = -1.4 ; x_2= 0.4 

Answer 2

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