<span>2 ( d - 5 ) d - ( d + 1)^3</span>
<span>2d-10d-3d+1=0</span>
<span>2d-10d-3d=-1</span>
<span>-11d=-1</span>
<span>d=1/11</span>
(2х +1)/12x^2y + 2 -3y/18xy^2 = (2x + 1)/12xy^2 + 2 -1/6xy = =(2x + 1 + 24xy^2 - 2y)/12xy^2
1) x² + 12x + 27 = 0
D = 12² - 4*27 = 144 - 108 = 36
X1,2 = (- 12 + - √36)/2 = (- 12 + - 6)/2
X1 = (- 12 + 6)/2 = - 3
X2 = (- 12 - 6)/2 = - 9
Ответ : - 3; - 9
2) 8x² - 13x - 6 = 0
D = 13² - 4*(-6)*8 = 169 + 192 =361
X1,2 = (13 + - √361)/16 = (13 + - 19)/16
X1 = (13 + 19)/16 = 32/16 = 2
X2 = (13 - 19)/16 = - 6/16 = - 0, 375
Ответ: - 0,375; 2
Ответ на прикреплённом фото