1. (2-3х)⁴=(4-12х+9х²)(4-12х+9х²)=
=16-48х+36х²-48х+144х²-108х³+36х²-108х³+81х⁴=
=81х⁴-216х³+216х²-96х+16
коэф х³=-216
3. х²-у=-2
2х+у=2
х²+2х=0
х(х+2)=0
х=0 у=2
х=-2 у=6
4. х-у=4 х=у+4
х*у=96 у²+4у-96=0
Д=16-4*(-96)=400
у₁=(-4+20)/2=8 х₁=у+4=8+4=12
у₂=(-4-20)/2=-12 х₂=у+4=-12+4=-8
G(4) = 3/(2*4) - 1= - 5/8
g(-2) = 3/[2*(-2)] - 1 = -3/4-1 = -1*3/4
<span>3/2х-1 = -7
3/2x = -6
x = -1/4
</span><span>3/2х-1 = 2
3/2x = 3
x=3/2</span>
А)а=2,b=-3,c=-2
D=(-3)^2-4*2*(-2)=9+16=25
x=3(плюс,минус) 5
______________
4
х1=3+5/4=8/4=2
х2=3-5/4=-2/4=-0,5
Ответ:2;-0,5