Pasos:
[tex](a + 5) (a + 5) =(a + 5)^{2} \\(a - 5) (a - 5) =(a - 5)^{2} \\=(a + 5)^{2}- (a - 5)^{2} \\(a + 5)^{2}:a^{2} +10a+25\\=a^{2} +10a+25-(a-5)^{2}\\ (a-5)^{2} :a^{2} -10a+25\\a^{2} +10a+25-(a^{2} -10a+25)\\-(a^{2} -10a+25):-a^{2} +10a-25\\=a^{2} +10a+25-a^{2} +10a-25\\Simplificar:[/tex]
= 20a
Me puedes dar coronita :)
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Pasos:
[tex](a + 5) (a + 5) =(a + 5)^{2} \\(a - 5) (a - 5) =(a - 5)^{2} \\=(a + 5)^{2}- (a - 5)^{2} \\(a + 5)^{2}:a^{2} +10a+25\\=a^{2} +10a+25-(a-5)^{2}\\ (a-5)^{2} :a^{2} -10a+25\\a^{2} +10a+25-(a^{2} -10a+25)\\-(a^{2} -10a+25):-a^{2} +10a-25\\=a^{2} +10a+25-a^{2} +10a-25\\Simplificar:[/tex]
= 20a
Me puedes dar coronita :)