松江区残联电话号码:x^4+81/4 (因式分解)

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详细过程~!

X^4+81/4
解:原式=(x^2)^2+(9/2)^2
=[(x^2)^2+(9/2)^2+9x^2]-9x^2
=(x^2+9/2)^2-(3x)^2
=(x^2+9/2-3x)(x^2+9/2+3x)

^---------代表什么?

x^4+81/4
=(x^2)^2+(9/2)^2
=[(x^2)^2+(9/2)^2+9x^2]-9x^2
=(x^2+9/2)^2-(3x)^2
=(x^2+9/2-3x)(x^2+9/2+3x)

考虑虚数吗?

X^4+81/4
=(x*x+9/2)^2-9x*x
=(x*x+3x+9/2)(x*x-3x+9/2)

X^4+81/4
原式=(x^2)^2+(9/2)^2
=[(x^2)^2+(9/2)^2+9x^2]-9x^2
=(x^2+9/2)^2-(3x)^2
=(x^2+9/2-3x)(x^2+9/2+3x)