分解因式:1.2a(x2+1)2-2ax2 2.2x2+2x+二分之一 3.a2-b2-4a+4b 4.x2+y2-1-2xy 5.2m(a-b)-3n(b-a) 5.(a-b)(3a+b)2+(a+3b)2(b-a)不要只有答案...
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![分解因式:1.2a(x2+1)2-2ax2 2.2x2+2x+二分之一 3.a2-b2-4a+4b 4.x2+y2-1-2xy 5.2m(a-b)-3n(b-a) 5.(a-b)(3a+b)2+(a+3b)2(b-a)不要只有答案...](/uploads/image/z/7567251-51-1.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%3A1.2a%28x2%2B1%292-2ax2+2.2x2%2B2x%2B%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80+3.a2-b2-4a%2B4b+4.x2%2By2-1-2xy+5.2m%28a-b%29-3n%28b-a%29+5.%28a-b%29%283a%2Bb%292%2B%28a%2B3b%292%28b-a%29%E4%B8%8D%E8%A6%81%E5%8F%AA%E6%9C%89%E7%AD%94%E6%A1%88...)
分解因式:1.2a(x2+1)2-2ax2 2.2x2+2x+二分之一 3.a2-b2-4a+4b 4.x2+y2-1-2xy 5.2m(a-b)-3n(b-a) 5.(a-b)(3a+b)2+(a+3b)2(b-a)不要只有答案...
分解因式:1.2a(x2+1)2-2ax2 2.2x2+2x+二分之一 3.a2-b2-4a+4b 4.x2+y2-1-2xy 5.2m(a-b)-3n(b-a) 5.(a-b)(3a+b)2+(a+3b)2(b-a)
不要只有答案...
分解因式:1.2a(x2+1)2-2ax2 2.2x2+2x+二分之一 3.a2-b2-4a+4b 4.x2+y2-1-2xy 5.2m(a-b)-3n(b-a) 5.(a-b)(3a+b)2+(a+3b)2(b-a)不要只有答案...
1.2a(x2+1)2-2ax2=2a[(x2+1)2-x2]=2a[(x2+1+x2)(x2+1-x2)]=2a(2x2+1) 2.2x2+2x+1/2=2(x2+x+1/4)=2(x+1/2)2 3.a2-b2-4a+4b=(a+b)(a-b)-4(a-b)=(a+b-4)(a-b) 4.x2+y2-1-2xy=(x2-2xy+y2)-1=(x-y)2-1=(x-y+1)(x-y-1) 5.2m(a-b)-3n(b-a)=2m(a-b)+3n(a-b)=(2m+3n)(a-b) 5.(a-b)(3a+b)2+(a+3b)2(b-a)=(a-b)[(3a+b)2-(a+3b)2]=(a-b)[(3a+b+a+3b)(3a+b-a-3b)]=(a-b)[4(a+b)(2a-2b)]=8(a+b)(a-b)2