计算:(x-2y)2(x+2y)2=______.
题型:填空题难度:一般来源:不详
计算:(x-2y)2(x+2y)2=______. |
答案
原式=[(x-2y)(x+2y)]2 =(x2-4y2)2 =x4-8x2y2+16y4. 故答案为:x4-8x2y2+16y4. |
举一反三
(1)(-)-(9-2) (2)已知:a=2+,b=2-.求a2+b2+ab的值. |
(a-2b+3c)(a+2b-3c)=______. |
若m-n=2,m+n=5,则m2-n2的值为______. |
计算(a-3)(a+3)(a2-9)=______. |
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