Respuesta:
[tex](10x+5) (10x-5)(10x-5)-4=0\\(10x+5) (100x^{2} -50x-50x+25)-4=0\\(10x+5) (100x^{2} -100x+25)-4=0\\1000x^{3}-1000x^{2} +250x+500x^{2} -500x+125-4=0\\1000x^{3}-500x^{2} -250x+125=0\\[/tex]
Explicación paso a paso:
