完全平方公式是什么？
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(a+b)(a-b)=a2- b2 (\u91cd\u70b9\u5f3a\u8c03\u516c\u5f0f\u7279\u5f81)\u53eb\u505a\u5e73\u65b9\u5dee\u516c\u5f0f,\u4e5f\u5c31\u662f:
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\u4f8b\uff1a\u5229\u7528\u5b8c\u5168\u5e73\u65b9\u516c\u5f0f\u8ba1\u7b97\uff1a
1\uff0e(4x-3x)2\uff1b 2\uff0e(-4xy+ab)2\uff1b
3\uff0e10\u00b732\uff1b 4\uff0e(x-2y+3y)2\uff0e
\u89e3\uff1a1\uff0e(4x-3y)2
\uff1d(4x)2-2(4x)\u00b7(3y)+(3y)2
\uff1d16x2-24xy+9y2\uff0e
2\uff0e(-4xy+ab)2
\uff1d(-4xy)2+2(-4xy)\u00b7(ab)+(ab)2
\uff1d16x2y2-8abxy+a2b2
3\uff0e10.32\uff1d(10+0.3)2
\uff1d100+6+0.09\uff1d106.09\uff0e
4\uff0e(x-2y+3z)2
\uff1dx2+(-2y)2+(3z)2+2\u00b7x\u00b7(-2y)+2\u00b7x\u00b7
(3z)+2\u00b7(-2y)\u00b7(3z)
\uff1dx2+4y2+9z2-4xy+6xz-12yz\uff0e
\u4f8b\uff1a\u8fd0\u7528\u516c\u5f0f\u8ba1\u7b97(4a-3b+c)(4a+3b+c)
\u89e3\uff1a(4a-3b+c)(4a+3b+c)
\uff1d[(4a+c)-3b][(4a+c)+3b]
\uff1d(4a+c)2-(3b)2
\uff1d16a2+8ac+c2-9b2\uff0e
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同学你好，如果问题已解决，记得右上角采纳哦~~~您的采纳是对我的肯定~谢谢哦
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