(2x+1)²-x²=(2x+1+x)(2x+1-x)=(3x+1)(x+1)
(p-2q)²-(2p-q)²=(p-2q+2p+q)(p-2q-2p+q)=(3p-q)(-p-q)=-(3p-q)(p+q)
(x+2)(x+4)+x²-4=(x+2)(x+4)+(x+4)(x-4)=(x+4)(x+2+x-4)=(x+4)(2x-2)=2(x+4)(x-1)
把下列各式分解因式 速度!在线等
100-(3x+2y)²=10²-(3x+2y)²=(10+3x+2y)(10-3x-2y)(2x+1)²-x²=(2x+1+x)(2x+1-x)=(3x+1)(x+1)(p-2q)²-(2p-q)²=(p-2q+2p+q)(p-2q-2p+q)=(3p-q)(-p-q)=-(3p-q)(p+q)(x+2)(x+4)+x²-4=(x+2...
把下列各式分解因式 急 只要答案
(1)a(x-2y)-b(2y-x)-x+2y =a(x-2y)+b(x-2y)-1(x-2y)=(x-2y)(a+b-1)(2)p(q+r-1)-q(r+q-1)+1-q-r =p(q+r-1)-q(q+r-1)-(q+r-1)=(q+r-1)(p-q-1)(3)3(x-y)²-6bx+6by =3(x-y)²-6b(x-y)=3(x-y)(x-y-2b)(4)x(x+y...
将下列各式分解因式急!HELP!!!
（1）ab-5bc-2a²+10ac =b(a-5c)-2a(a-5c)=(a-5c)(b-2a)（2）x²y+3x-2x²y²-6y =x((xy+3)-2y （3）6ax²+15b²y²-6b²x²-15ay²=6ax^2-6b^2x^2-15ay^2+15b^2y^2 =6x^2(a-b^2)-15y^2(a-b^2)...
把下列各式分解因式
（2）4a(m-n)-2b(n-m)=4a(m-n)+2b(m-n)=(4a+2b)(m-n)（3）7m(x-5)的三次方-2n(x-5)的二次方 =(x-5)^2(7m(x-5)-2n)=(x-5)^2(7mx-35m-2n)（4）4p的二次方（a+3）-3p的二次方（a+3）的二次方 =p^2(a+3)(4-3(a+3))=p^2(a+3)(-3a-5)（5）...
把下列各式分解因式
[1]xy^3+x^4 =x(x^3+y^3)=x(x+y)(x^2-xy+x^2)[2]x^2-3x+2 =(x-2)(x-1)[3]x^2-x-2 =(x-2)(x+1)[4]x^2+4x-5 =(x+5)(x-1)[5]x^2+4x+3 =(x+3)(x+1)[6]6x^2-7x-3 =(3x+2)(2x-3)[7]2x^2-3x-3 [8]8x^2+26x-15 =(4x+15)(2x-...
把下列各式分解因式:
1) (x+y)^2+6(x+y)+9 =(x+y)^2+2*(x+y)*3+3^2 =(x+y+3)^2 2) a^2-2a(b+c)+(b+c)^2 直接套完全平方 =[a-(b+c)]^2 =(a-b-c)^2 3) 169(a-b)^2-196(a+b)^2 =[13(a-b)]^2-[14(a+b)]^2 =(13a-13b)^2-(14a+14b)^2 =[(13a-13b)+(...
把下列各式分解因式:
x+3y), 将3y-4x变成-(4x-3y)，整理 ＝（x+3y)²-2(x+3y)(4x-3y)+(4x-3y)² 将x+3y、4x-3y分别看作一个数，刚好是一个完全平方式 ＝[(x+3y)-(4x-3y)]²＝(x+3y-4x+3y)²＝(-3x+6y)²＝(3x-6y)²＝9(x-2y)²...
把下列各式分解因式
（1）a的平方+a+1\/4=(a+1\/2)²（2）16a的平方-8ab+b的平方=(4a-b)²（3）-2xy-x的平方-y的平方=-(x²+2xy+y²)=-(x+y)²（4）a的四次方-2a的平方b的三次方+b的6次方=(a²-b³）²
把下列各式进行因式分解:要过程
(x-y)-(x-y)=(x-y)(x+y-1)2.=-[(a^2-2ab+b^2)-4]=-[(a-b)^2-2^2]=-(a-b+2)(a-b-2)3.=(a-b)^2-c^2=(a-b+c)(a-b-c)4.=(x+2y)(x-2y)+(x-2y)=(x-2y)(x+2y+1)5.=m^2(m+2)-9(m+2)=(m+2)(m^2-9)=(m+2)(m+3)(m-3)...
因式分解下列各式。急!!在线等,
2. a的六次方-2a³b³+b的六次方 =(a³-b³)²=[(a-b)(a²+ab+b²)]²=(a-b)²(a²+ab+b²)²3. a^4-2a²+1 =(a²-1)²=[(a+1)(a-1)]²=(a+1)²(a-1)²...
