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x = -1+2-6
x = -5
B) x² + 2x = 4x+3
x² = 4x+3-2x
x² = 2x +3
C) x²+2x+5x+10=10
x²+7x+10=10
x² = 10-10-7x
x(x) = -7x
x = -7x/x
x = -7
D) (3x-5)/2 > 3x+8
3x-5 > 2(3x+8)
3x+5 > 6x+16
3x-6x > 16-5
-3x > 11
x > -11/3
x= -3
el segundo es asi x(x+2)=4x+3
x2+2x-4x-3 =0 ----- x2-2x-3=0 ------- (x-3)(x+1)=0 x=3 y x=-1
la c no se si esta bien copiada
la d creo que algo le falta