问题
解答题
在实数范围内分解因式:
(1)x3-2x;(2)x4-6x2+9.
答案
(1)x3-2x=x(x2-2)=x(x+
)(x-2
);2
(2)x4-6x2+9,
=(x2-3)2,
=(x+
)2(x-3
)2.3
在实数范围内分解因式:
(1)x3-2x;(2)x4-6x2+9.
(1)x3-2x=x(x2-2)=x(x+
)(x-2
);2
(2)x4-6x2+9,
=(x2-3)2,
=(x+
)2(x-3
)2.3