Question

$(6 {a}^{2} - 5mn {a}^{2} + 8m {}^{2} - 3) + {a}^{2} - 12 {a }^{2} - 4a + 2)$
$(2mn - 5mn {}^{2} + 8m {}^{2} n) - (10mn + 6m {}^{2} n - 3mn + mn)$
$(3\5 {x }^{2} - 4\5x + 2\5) + (x - 2\5x {x}^{2} + 7\5)$
$(mn + m {}^{2} - 2 {n}^{3} ) - (5m {}^{2} - 2n {}^{3} ) - (5m {}^{2} + 8mn - 6 {n}^{3} ) + (3mn - 6 {m}^{2} + 4 {n}^{3}$
$(2xy - 5x {}^{2} y - 6xy + 4 {x}^{2} y) - (5xy - 3xy {}^{2} + 8xy - 3 {x}^{2} y + 12x {y}^{2} )$
$(3\4ab - 5\3mn + 2\3ab + 4\6m {}^{2} n) + ( - 5\6ab - 4 \12mn + 3\2ab + 5\2m {}^{2} n)$
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Answer 1

Holandés que es la resistencia