Question

рівняння (х-1,2)(4,2+2х)=0

Answer 1

Объяснение:

$(x - 1.2)(4.2 + 2x) = 0 \\ (x - \frac{6}{5} ) \times ( \frac{21}{5} + 2x) = 0 \\ x - \frac{6}{5} = 0 \\ \frac{21}{5} + 2x = 0 \\ x = \frac{6}{5} \\ x = - \frac{21}{10} \\ x1 = - \frac{21}{10} = - 2.1. \: \: \: x2 = \frac{6}{5} = 1.2$

Овтет: -1,2. 1,2