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a=1 b=-6 c=10
pake rumus abc
-b ±((√b²-4(a) c)/2a)
= 6 ±((√-6²-4(10)/2(1))
=6 ±(√36-40/2)
X1=6 +(√-4/2)
X1=6-2/2
X1=4/2
X1=2
X2=6 -(√-4/2)
X2= 6 (√4/-2)
X2=6+2/-2
X2=8/-2
X2=-4.
a). (X1-2) dan (X2+2)
=(2-2) dan (-4+2)
=(0) dan (-2)