填空: (1)x2+2•x•2+ =(x+ )2; (2)x2-2•x•6+ =(x- )2; (3)x2+10x+ =(x+ )2; (4)x2-8x+ =(x- )2.
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题目内容:
填空:
(1)x2+2•x•2+ =(x+ )2;
(2)x2-2•x•6+ =(x- )2;
(3)x2+10x+ =(x+ )2;
(4)x2-8x+ =(x- )2.
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