51问答网 > 公式法因式分解，过程不要忘了

公式法因式分解，过程不要忘了

过程不要忘了1.16a^4-b^42.(a+b)^2-6(a+b)+9
2025-04-03 14:28:14
推荐回答（2个）
回答1：

1.16a^4-b^4
=(4a^2+b^2)(4a^2-b^2)
=(4a^2+b^2)(2a+b)(2a-b)
<满足平方差公式>
2.(a+b)^2-6(a+b)+9
=(a+b-3)^2<完全平方差公式>

回答2：

1.16a^4-b^4
=(4a^2+b^2)(4a^2-b^2)
=(4a^2+b^2)(2a+b)(2a-b)

2.(a+b)^2-6(a+b)+9
=(a+b-3)^2

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