Question

Решите уравнения
Если можно то с подробным решением
Заранее спасибо​

Answer 1

Ответ:

$\frac{1}{5} x^{2} - 5 \\ {x}^{2} - 25 = 0 \\ {x}^{2} = 25 \\ x = + - 5$

$9 {y}^{2} - 6.25 = 0 \\ 9 {y}^{2} = 6.25 \\ y^{2} = \frac{6.25}{9} \\ y = \sqrt{ \frac{6.25}{9} } \\ y = \frac{2.5}{3}$

$1.44 - {x}^{2} = 3x^{2} \\ 1.44 = 3x^{2} + {x}^{2} \\ 1.44 = 4x^{2} \\ {x}^{2} = 0.36 \\ x = + - 0.6$

$\frac{5}{7} {x}^{2} = - 3.5 + {x}^{2} \\ 5 {x}^{2} = - 24.5 + 7x^{2} \\ - 2 {x}^{2} = - 24.5 \\ {x}^{2} = 12.25 \\ x = + - 3.5$

$(2y - 1)^{2} = 10 - 4y \\ 4 {y}^{2} - 4y + 1 = 10 - 4y \\ 4 {y}^{2} = 9 \\ {y}^{2} = 2.25 \\ y = + - 1.5$

$(3m - 2)(3m + 2) = 5 {m}^{2} \\ 9 {m}^{2} - 4 = 5 {m}^{2} \\ 4m^{2} = 4 \\ {m}^{2} = 1 \\ m = + - 1$