4a(a-b)+b²(4a²+1)²-16a²用多项式分解因式99²+199用简便方法计算
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![4a(a-b)+b²(4a²+1)²-16a²用多项式分解因式99²+199用简便方法计算](/uploads/image/z/160306-34-6.jpg?t=4a%EF%BC%88a-b%EF%BC%89%2Bb%26%23178%3B%EF%BC%884a%26%23178%3B%2B1%EF%BC%89%26%23178%3B-16a%26%23178%3B%E7%94%A8%E5%A4%9A%E9%A1%B9%E5%BC%8F%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F99%26%23178%3B%2B199%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97)
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4a(a-b)+b²(4a²+1)²-16a²用多项式分解因式99²+199用简便方法计算
4a(a-b)+b²
(4a²+1)²-16a²
用多项式分解因式
99²+199
用简便方法计算
4a(a-b)+b²(4a²+1)²-16a²用多项式分解因式99²+199用简便方法计算
4a(a-b)+b²
=4a²-4ab+b²
=(2a-b)²
(4a²+1)²-16a²
=(4a²+1-4a)(4a²+1+4a)
=(2a-1)²(2a+1)²
99²+199
=(100-1)²+199
=10000-200+1+199
=10000