(1) Original expression=x4+x2y2+14y4−x2y2=(x2+12y2)2−(xy)2=14(2x2+2xy+y2)(2x2−2xy+y2) (2) Original expression=x4+8x2y2+16y4−9x2y2=(x2+4y2)2−(3xy)2=(x2+3xy+4y2)(x2−3xy+4y2) (3) Original expression=−(a4−18a2+81)=−(a2...
⑴分解因式:x4+2x3+3x2+2x+1;⑵分解因式:x4+7x3+14x2+7x+1;⑶分解因式:x4+y4+(x+y)4. 答案 ⑴法一:原式=x4+2x3+3x2+2x+1=x4+2x3+x2+2x2+2x+1=(x2+x)2+2(x2+x)+1=(x2+x+1)2;法二:原式=(x4+1)+2x(x2+1)+3x2=(x2+1)2−2x2+2x(x2+1)+3x2=...
1【题目】Factorize:(1) a^2-b^2-x^2+y^2-2ay+2bx(2) 4x^2-4x-y^2+4y-3(3) x^4+x^2-2ax+1-a^2(4) x^4+y^4+z^4-2x^2y^2-2y^2z^2-2z^2x^2 2Factorize:(1) a2−b2−x2+y2−2ay+2bx(2) 4x2−4x−y2+4y−3(3) x4+x2−2ax+1−a2(4) x4...
self.Y = [] self.phase = [] self.H = [] self.U = [] self.clist = [True] * self.Kdef factorize(self): if FACTORIZE == "SimpleNMF" : # SimpleNMF self.Y = np.abs(self.orig_spectrogram) self.phase = np.angle(self.orig_spectrogram) self.H, self.U = music_factorize.nmf_eu...