Question

Od e do f proszę o jak najszybsza odpowiedz

Answer 1

E). 2x5-2x4-12x3=0
2x3(x2-x-6)=0
2x3=0
x=0
x2-x-6=0
DElta= (-1) -4*1*(-6)= 1+24=25
pierwiatsek z delty= 5
x1= 1-5/2*1=-4/2=-2
x2=1+5/2*1=3
f0. 10x4+x3=2x2
10x4+x3-2x2=0
x2(10x2+x-2)=0
x2=0
x=0
10x2+x-2=0
Delta=1^-4*10*(-2)=1+8-=81
Pierwiastek z delta=9
x1=-1-9/2*10=-10/20=-1/2
x2=-1+9/2*10=8/20=2/5
g). 9x6+6x5+x4=0
x4(9x2+6x+x)=0
x4=0
x=0
9x2+6x+x=0
Delta= 6*6-4*9*1=0
x0= -6/2*9=-6/18=-1/3
h). x5+4x4=12x3
x5+4x4-12x3=0
x3(x2+4x-12)=0
x3=0
x=0
x2+4x-12=0
Delta=4*4-4*1*(-12)=16+48=64
pierwiastek z delty= 8
x1=-4-8/2*1=-12/2=-6
x2=-4+8/2*1=4/2=2