因式分解题3x^4+6x^2-9

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因式分解题3x^4+6x^2-9

因式分解题3x^4+6x^2-9
因式分解题3x^4+6x^2-9

因式分解题3x^4+6x^2-9
3x^4+6x^2-9
=3(x^4+2x²-3)
=3(x²-1)(x²+3)
=3(x-1)(x+1)(x²+3)

3x^4+6x^2-9
=3(x^4+2x²-3)
=3(x²+3)(x²-1)
=3(x²+3)(x+1)(x-1)

3(X2+3)(X-1)(X+1)

3(x+3)(x-1)

原式=3(x^4+2x^2+1-4)
=3[(x^2+1)^2-4]
=3(x^2+3)(x^2-1)
=3(x^2+3)(x+1)(x-1)