因式分解 2a的平方b+4ab-6b 16x的四次方-8x的二次方y的二次方+y的四次方
人气:175 ℃ 时间:2019-08-19 00:47:20
解答
2a的平方b+4ab-6b
=2b(a^2+2a-3)
=2b(a+3)(a-1)
16x的四次方-8x的二次方y的二次方+y的四次方
=(4x^2-y^2)^2
=(2x+y)^2(2x-y)^2
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