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变形后提公因式分解因式1{a-2b}³-3c{2b-a}²和25a²{x-y}+10a{y-x}呢?1{a-2b}³-3c{2b-a}²和25a²{x-y}+10a{y-x}

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▼优质解答
答案和解析
(1) {a-2b}³-3c{2b-a}²
=(a-2b)³ - 3c(a-2b)²
=(a-2b)²(a-2b-3c)
(2) 5a²{x-y}+10a{y-x}
=5a²(x-y) - 10a(x-y)
=(x-y)(5a²-10a)
=5a(x-y)(a -2)