整式乘法公式专项练习题(共3页).doc

精选优质文档-倾情为你奉上乘法公式练习题（一）一、填空题 1.(a+b)(ab)=_, 2.(x1)(x+1)=_, (2a+b)(2ab)=_, (xy)(x+y)=_. 3.(x+4)(x+4)=_, (x+3y)(_)=9y2x2, (mn)(_)=m2n2 4.98102=(_)(_)=( )2( )2=_. 5.(2x2+3y)(3y2x2)=_. 6.(ab)(a+b)(a2+b2)=_. 7.(_4b)(_+4b)=9a216b2, (_2x)(_2x)=4x225y2 8.(xyz)(z+xy)=_, (x0.7y)(x+0.7y)=_. 9.(x+y2)(_)=y4x2 10.观察下列各式： (x1)(x+1)=x21