ax2+bx+c=1(dwojka to potega)
cx2+bx+a=1(dwojka to potega)
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ax2+bx+c=1
cx2+bx+a=1
ax²+bx+c=cx²+bx+a
ax²+bx+c-cx²-bx-a=0
ax²+c-cx²-a=0x²(a-c)-(a-c)=0
(x²-1)(a-c)=0
(x-1)(x+1)(a-c)=0
Odp:x=1 lub x=-1
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ax2+bx+c=1
cx2+bx+a=1
ax²+bx+c=cx²+bx+a
ax²+bx+c-cx²-bx-a=0
ax²+c-cx²-a=0
x²(a-c)-(a-c)=0
(x²-1)(a-c)=0
(x-1)(x+1)(a-c)=0
Odp:x=1 lub x=-1