因式分解

显示全部楼层 · 2012-7-29 18:22:30

1. 4x2y2-4xy+1=(2xy-1)22. 16x2+24x+9=(4x+3)23. -a2-10a-25=-(a2+10a+25)=-(a+5)24. 1-8(a-b)+16(a-b)2=(1-4(a-b))2=(1-4a+4b)25. (x2-3)2-2(x2-3)+1=(x2-3-1)2=(x2-4)2=(x+2)2(x-2)26. x?-8x2y2+16...

千问 · 2012-7-29 18:22:30

1. 4x2y2-4xy+1=(2xy-1)22. 16x2+24x+9=(4x+3)23. -a2-10a-25=-(a+5)24. 1-8(a-b)+16(a-b)2=(1-4a+4b)25. (x2-3)2-2(x2-...

千问 · 2012-7-29 18:22:30

1. 4x2y2-4xy+1=(2xy-1)22.16x2+24x+9=(4x+3)23. -a2-10a-25=-(a+5)24. 1-8(a-b)+16(a-b)2=(1-4a+4b)25. (x2-3)2-2(x2-3...

千问 · 2012-7-29 18:22:30

4x2y2-4xy+1=(2xy-1)^216x2+24x+9=(4x+3)^2-a2-10a-25=-(a+5)^21-8(a-b)+16(a-b)2=(1-4a+4b)^2 (x2-3)2-2(x2-3)+1=(x^2-3-1)^2=(x+2)^2(x-2)^...

千问 · 2012-7-29 18:22:30

解1.4x2y2-4xy+1=(2xy-1)^2解2.16x2+24x+9=(4x+3)^2解3.-a2-10a-25=-(a+5)^2解4.1-8(a-b)+16(a-b)2=(1-4a+4b)^2解5.(x2-3)2-2(x2-3)+1=(x^2-3-1)^2...