usando a propriedade distributiva resolva apresentando o calculo
1) -6t^2 • (t-1)
2) -5xy • (-x-y)
3) -ab • (a-b)
1) -6t^2 • (t-1)
2) -5xy • (-x-y)
3) -ab • (a-b)
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2) -5xy *( -x) -5xy(-y)= 5yx^2 +5xy^2
3) -ba^2 + ab^2