熟能生巧 5 （请在2分钟内完成10道题目）完全平方公式

[latex] (x+2)^{2}= x^{2}+?x+4[/latex] 

[latex] (y-4)^{2}= y^{2}-8y+?[/latex] 

[latex] (m+n)^{2}= m^{2}+?+ n^{2} [/latex]

[latex] (p-q)^{2}= p^{2} – 2pq ? q^{2} [/latex]

[latex] (3a+b)^{2}= ?a^{2}+6ab+ b^{2} [/latex]

[latex] (4m-5n)^{2}= 16m^{2}-40mn+ ?n^{2} [/latex] 

[latex] (x^{2}+y^{2})^{2}= x^{4}+2 x^{?} y^{2} + y^{4} [/latex] 

[latex] (6-x^{2})^{2}= 36-12 x^{2}+x^{?}[/latex]

[latex] (ab+c)^{2}= a^{2} b^{2}+2?+ c^{2} [/latex] 

[latex] (xyz-1)^{2}= x^{2} y^{2} z^{2} -2xyz+?[/latex]