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a2=x-5
a3=36
a2²=a1*a3
(x-5)²=4*36
x²-10x+25-144=0
x²-10x-119=0
Δ=100+476=576 √Δ=24
x1=[10-24]/2=-7
x2=[10+24]/2=17
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dla x=-7; a1=4 a2=-7-5=-12 a3=36 q=-12/4=-3 q=36/-12=-3
dla x=17 ; a1=4 a2=17-5=12 a3=36 q=12/4 =3 q=36/12=3
odp. ;
x=-7 lub x=17