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(3x-3) (x-2)
3x-3=0 x-2=0
x=3/3 x2=2
x1=1
a²+b²
1²+2²=5
a=3 b= -9 c= 6
a+b = -b/a
-(-9)/3= 3
a.b=c/a
6/2=2
a^2+b^2=?
a^2+b^=(a+b)^2-2ab
(3+2)^2-2(3).(2)
5^2-2.6
25-12
13
a^2+b^2=13