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1/2t2+3t-8=0
delta= b2-4ac= 9-4*1/2*(-8)=9+16=25
pierwiastek z delty=5
x1=-8
x2=2
b) y2+5/2y+1=0
delta= b2-4ac=9/4
pierwiastek z delty= 3/2
x1=-2
x2=-1/2
c) -m2+2/3m+1/3=0
delta= b2-4ac=16/9
pierwiastek z delty= 4/3
x1=1
x2=-1/3
d) 3/2x2-x+4=0
delta= b2-4ac=1+24=25
pierwiastek z delty=5
x1=-4/3
x2=2
e) 1/3t2-1/2t-1/3=0
delta= b2-4ac=25/36
pierwiastek z delty=5/6
x1=-1/2
x2=2
f)4/3x2-4x+3=0
delta= b2-4ac=0
x=-b/2a=1 1/2
g) 1/2x2+x-1/2=0
delta =b2-4ac=2
pierwiastek z delty= pierwiastek z 2
x1=-1-pierwiastek z 2
x2=-1+pierwiastek z 2
h) 2/3x2-2x-6=0
delta= b2-4ac=20
pierwiastek z delty= 2 pierwiastki z 5