Question

реши уравнение 0,3x²×(-8x²)= -2,4

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Answer 1

Ответ:

$0.3 {x}^{2} \times (-8 {x}^{2} ) = - 2.4 \\ - \frac{3}{5} {x}^{2} \times 4 {x}^{2} = - \frac{12}{5} \\ - \frac{12}{5} {x}^{4} = - \frac{12}{5} \\ {x}^{4} = 1 \\ x = 1 \\ x = - 1$

Answer 2

Ответ:

0,3( х-2) =0,8+0,4(х +4 )

0,3х-0,6=0,8+0,4х+1,6-0,1х= 3

х= -30