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2(m+1+3)2(m+1+3)详细解题步骤

2019-05-30

2(m+1+3)
2(m+1+3)详细解题步骤
优质解答
运用公式( a + b + c).= a + b + c + 2 a b + 2bc + 2c a 2(m+1+3) =2(m+1+3+2m+6+6m) =2(m+16+8m) =2m+16m+32 运用公式( a + b + c).= a + b + c + 2 a b + 2bc + 2c a 2(m+1+3) =2(m+1+3+2m+6+6m) =2(m+16+8m) =2m+16m+32
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