допоможіть (2х+6)(7-4х)=(2-х)(8х+1)+15

допоможіть
(2х+6)(7-4х)=(2-х)(8х+1)+15
- Предмет:
  Алгебра
- Автор:
  liviab5g7
- 6 лет назад

Ответы 2

$14x-8 x^{2} +42-24x=16x+2-8 x^{2} -x+15 \\ -10x+42=15x+17 \\ -25x=-25 \\ x=1$
- Автор:
  annikarzyv
- 6 лет назад
- 0
(2x+6)(7x-4x)=(2-x)(8x+1)+1514x2-8x2+42x-24x=16x+1-8x2-x+1514x2-8x2+42x-24x-16x-1+8x2+x-15-2x2+3x-14=0D=b2-4ac=9-4*-2*-14=-103D<0,следовательно нет решения
- Автор:
  chaosray
- 6 лет назад
- 0
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допоможіть (2х+6)(7-4х)=(2-х)(8х+1)+15

Ответы 2

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допоможіть
(2х+6)(7-4х)=(2-х)(8х+1)+15