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-2.5
7
:)
esta es la respuesta correcta
2x²+x-105=0
(2x+15)(x-7)=0
2x+15=0 ∨ x-7=0
x=-15/2 x=7
15x=25x²+2
25x²-15x+2=0
(5x-2)(5x+1)=0
5x-2=0 ∨ 5x+1=0
x=2/5 x=-1/5