Explicación paso a paso:
-7a • (3a – 2b + c)
=
[tex] - 21 {a}^{2} + 14ab - 7ac[/tex]
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Explicación paso a paso:
-7a • (3a – 2b + c)
=
[tex] - 21 {a}^{2} + 14ab - 7ac[/tex]