Question

Помогите с двумя примерами

Answer 1

8x^2 - 4x = 0
8x^2 = 4x
2x^2 = x
x = 0
(2,6*c^-5 * d^10)*(2/9*c^7 *d^-3)
26/10*c^2 *2/9*d^7
26/45 * c^2 * d^7