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y=4x²-6x+2x-3
y=4x²-4x-3
a=4, b=-4, c=-3
Δ=b²-4ac=(-4)²-4*4*(-3)=16+48=64
p=-b/2a=4/8=1/2
q=-Δ/4a=-64/16=-4
y=4(x-1/2)²-4
W(1/2;-4) - wierzchołek
OŚ SYMETRII: y=1/2
b) y=(4x-1)(5-4x)
y=20x-16x²-5+4x
y=-16x²+24x-5
Δ=576-320=256
p=16/40=2/5
q=-256/-64=4
y=-16(x-2/5)²+4
W(2/5;4)
OŚ SYMETRII: y=2/5