Question

Помогите пожалуйста!!!​

Answer 1

а)

$3 {x}^{2} = 18x \\ 3 {x}^{2} - 18x = 0 \\ 3x(x - 6) = 0 \\ x_{1} = 0\\ x_{2} = 6$

б)

$100 {x}^{2} - 16 = 0 \\ (10x) {}^{2} - {4}^{2} = 0 \\ (10x - 4)(10x + 4) = 0 \\ (x - 0.4)(x + 0.4) = 0 \\ x_{1} = 0.4\\ x_{2} = - 0.4$