2x的四次方
2x^4+128
=2(x^4+64)
=2[(x)²+8²]
出条部李德呢=2[(x)²+2*x²*8+8²-2*x²*8]
=2[(x²+8)²-16x²]
=2[(x²+8)²-(4x)²]
=2[(x²+8)+4x][(x²+8)-4x]
=2(x²+4x+8)(x²-4x+8)
2x^4+128
=2[(x²)²+64]
=2{[(x²)²+1句宗能种获青扬存担见6x²+64]-16x²}
=2[(x²+8)²-(4x)²]
=2(x²+4x+8)(x²-4x+支鲜溶西请相双巴美工8)
2x^4 + 128
=2(x^4+64)
=2(x^4+16x²+64-16x²)
=2[(x²+8)²-16x²世认超兵突药良助百胡呼]
=2(x²+4x+8)(x²-4x+8)
2x^4+12院念念丰茶再威球天8
=2[(x²)²+64]
=2{[(x²)²+16x²+64]-16x²}
=2[(x²+8)²-(4x)²]
=2(x²+4x+8)(x²-4x+8)
【系数在实数内,分解到此为止】
=2[盾随温作困科余找(x²+4x+4)+4][(x²-4x+4)+4]
=2[(x+2)²-(2i)²][(x-2)²-(2i)²]
=2(x+2+2i)(x+2-2i)(x-2+2i)(x-2-2i)