1. ∫(eˣ-1/x)dx=eˣ-ln|x|+c
2. ∫(sinx+4cosx-5√x)dx=-cosx+4sinx-5*3√x*x/2=-cosx+4sinx-7.5x√x+c
3. ∫(6-3x)⁷dx 6-3x=z 3x=6-z x=2-z/3 dx=-dz/3
∫(6-3x)⁷dx=-1/3∫z⁷dz=-1/3*8*z⁸=z⁸/24=(6-3x)⁸/24
(x+6)ˇ2 -(x-5)(x+5)=79
xˇ2+12x+36-xˇ2+25=79
12x+61=79
12x=18, x=3/2
.надеюсь так..............
По теореме Виета x1 + x2 = -b, x1 × x2 = c
8 × x2 = 24
x2 = 3
x1 + x2 = -b
3 + 8 = 11 => p = -11 (-b = p)
Ответ: при p = -11