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x²+5x-50=0
x 10
x -5
x-5=0
x=5 rpta
x+10=0
x=-10
x -10
x +5
-10x+5x= -5x
(x-10)(x+5)=0
x-10 = 0 x+5 = 0
x =10 x=-5
CS= (-5,10)