Question

4x (3,5x-7) -8(x²-4)= 20x +6x² решите по фасту уровнение пж​

Answer 1

Ответ:

${14x}^{2} - 28x - {8x}^{2} + 32 = 20x + {6x}^{2} \\ \\ {6x }^{2} - 28x + 32 = 20x + {6x}^{2} \\ \\ - 28x + 32 = 20x \\ \\ - 48x = - 32 \\ \\ x = \frac{3}{2}$