Решите урaвнение. 1) (14x-1)×(2+x)=(2x-8)×(7x+1) 2)(x+10)×(x--6)×(x+3)=16 - вопрос №83330051141228712106316 от danaj04 11.01.2020 03:58

Question

Алгебра: Решите урaвнение. 1) (14x-1)×(2+x)=(2x-8)×(7x+1) 2)(x+10)×(x--6)×(x+3)=16

danaj04 · Answer

1) (14x - 1)(x + 2) = (2x - 8)(7x + 1)14x^2 - x + 28x - 2 = 14x^2 - 56x + 2x - 827x - 2 = -54x - 881x = -6x = -6/81 = -2/272) (x + 10)(x - 5) - (x - 6)(x + 3) = 16x^2 + 10x - 5x - 50 - (x^2 - 6x + 3x - 18) - 16 = 0x^2 + 5x - 50 - x^2 + 3x + 18 - 16 = 08x - 48 = 08x = 48x = 48/8 = 6...