rozwiaz nierownosc
1) 4x∧4-5x²+1=0
2) 2x∧5+ 5x³+12x=0
3)2x∧7-x∧4=-x=0
a) 4x^4-5x²+1=0
x^2=t
4t^2-5t+1=0
delta= 25-16= 9
pier z delty = 3
t1= (5-3)/8= 1/4
t2= (5+3)/8 = 1
1/4=x^2 v 1= x^2
x= 1/2 v x= -1/2 v x=1 v x=-1
2) 2x^5+ 5x³+12x=0
x(2x^4+5x^3+12)=0
x=0
(2x^4+5x^3+12)=0
t=x^2
2t^2 +5x+12=0
delta = 25 -96= -71
delta <0 brak miejsc zerowych
3)2x^7-x^4-x=0
x(2x^6-x^3-1)=0
v
2x^6-x^3-1=0
x^3=t
2t^2-t-1=0
delta = 1+8=9
t1= (1-3)/4 = -1/2
t2= (1+3)/4= 1
x^3= -1/2 spr
x^3=1
x=1
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a) 4x^4-5x²+1=0
x^2=t
4t^2-5t+1=0
delta= 25-16= 9
pier z delty = 3
t1= (5-3)/8= 1/4
t2= (5+3)/8 = 1
1/4=x^2 v 1= x^2
x= 1/2 v x= -1/2 v x=1 v x=-1
2) 2x^5+ 5x³+12x=0
x(2x^4+5x^3+12)=0
x=0
(2x^4+5x^3+12)=0
t=x^2
2t^2 +5x+12=0
delta = 25 -96= -71
delta <0 brak miejsc zerowych
3)2x^7-x^4-x=0
x(2x^6-x^3-1)=0
x=0
v
2x^6-x^3-1=0
x^3=t
2t^2-t-1=0
delta = 1+8=9
pier z delty = 3
t1= (1-3)/4 = -1/2
t2= (1+3)/4= 1
x^3= -1/2 spr
x^3=1
x=1