Explicación paso a paso:
3x(×-2)=3x2 -6×
(×-2)(5×-5)= 5x2-5×-10×-10= 6x2-15×-10
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Explicación paso a paso:
3x(×-2)=3x2 -6×
(×-2)(5×-5)= 5x2-5×-10×-10= 6x2-15×-10