Question

Помогите пожалуйста СРОЧНО

Answer 1

1)${(2x + 1)}^{2} - (x + 5)(x - 5) = 3x(x - 1) \\ 4 {x}^{2} + 4x + 1 - {x}^{2} + 25 = 3 {x}^{2} - 3x \\ 7x + 26 = 0 \\ 7x = - 26 \\ x = - \frac{26}{7} = - 3 \frac{5}{7}$

2) $(x + 3)(3x - 1) - {(3x - 2)}^{2} = 3 {x}^{2} + 9x - x - 3 - 9 {x}^{2} + 12x - 4 = - 6 {x}^{2} + 20x - 7$

3) ${(3x - 1)}^{2} - (x - 2)(x + 2) = 8x(x + 1) \\ 9 {x}^{2} - 6x + 1 - {x}^{2} + 4 = 8 {x}^{2} + 8x \\ 14x = 5 \\ x = \frac{5}{14}$