(5a+1)( )=25a²-1(2x-3)( )=4x²-9(-3a+ )(-3a- )=9a²-4b²(x-1)(x+1)(1+x²)= (x-1)( )=1-x²(a+b)( )=b²-a²(2m+1)(4m-1)=(1-xy)(-xy-1)=(-a-2b)²=-4m(4m-1)和-12mn(m+n)²的公因式是(a-b)五次方-3
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(5a+1)( )=25a²-1(2x-3)( )=4x²-9(-3a+ )(-3a- )=9a²-4b²(x-1)(x+1)(1+x²)= (x-1)( )=1-x²(a+b)( )=b²-a²(2m+1)(4m-1)=(1-xy)(-xy-1)=(-a-2b)²=-4m(4m-1)和-12mn(m+n)²的公因式是(a-b)五次方-3
(5a+1)( )=25a²-1
(2x-3)( )=4x²-9
(-3a+ )(-3a- )=9a²-4b²
(x-1)(x+1)(1+x²)=
(x-1)( )=1-x²
(a+b)( )=b²-a²
(2m+1)(4m-1)=
(1-xy)(-xy-1)=
(-a-2b)²=
-4m(4m-1)和-12mn(m+n)²的公因式是
(a-b)五次方-3(a-b)³的公因式是
计算(-5/12)2007次方×(2又2/5)2006次方
若a²+a+1=2,则(a-5)(6+a)=
如果(2a+2b+1)(2a+2b-1)=63,则a+b=
x²-4x+( )=( )²
( )+2ay+1=( )²
如果x²+mx-45=(x+n)(x+5),则m= n=
因式分解x³-x= ,t²y+xy²
如果x+y=10,xy=7,则x²y+xy²=
若mx²-ny²=(x+3y)(x-3y),则m= n=
若x²+y²+2x-6y+10=0,则x的Y次方=
(5a+1)( )=25a²-1(2x-3)( )=4x²-9(-3a+ )(-3a- )=9a²-4b²(x-1)(x+1)(1+x²)= (x-1)( )=1-x²(a+b)( )=b²-a²(2m+1)(4m-1)=(1-xy)(-xy-1)=(-a-2b)²=-4m(4m-1)和-12mn(m+n)²的公因式是(a-b)五次方-3
(5a+1)(5a-1 )=25a²-1
(2x-3)( 2x+3 )=4x²-9
(-3a+2b )(-3a-2b )=9a²-4b²
(x-1)(x+1)(1+x²)=(x^2-1)(1+x²)=x^4-1
(x-1)( -x-1)=1-x²
(a+b)( b-a)=b²-a²
(2m+1)(4m-1)=8m^2+2m-1
(1-xy)(-xy-1)=(xy)^2-1
(-a-2b)²=a²+4b²+4ab
-4m(4m-1)和-12mn(m+n)²的公因式是m
(a-b)五次方-3(a-b)³的公因式是(a-b)
计算(-5/12)2007次方×(2又2/5)2006次方 -5/12
若a²+a+1=2,则(a-5)(6+a)=a²+a-30= -29
如果(2a+2b+1)(2a+2b-1)=63,则a+b=4 【七九63】
x²-4x+ ( 4 )=( x-2)²
( a²y² )+2ay+1=( ay+1 )²
如果x²+mx-45=(x+n)(x+5),则m= -4 n = -9
因式分解x³-x=x(x²-1)=x(x-1)(x+1) ,t²y+xy²=y(t²+xy)
如果x+y=10,xy=7,则x²y+xy²=xy(x+y)=70
若mx²-ny²=(x+3y)(x-3y),则m= 1 n=9
若x²+y²+2x-6y+10=0,则x的Y次方= -1 【 x²+y²+2x-6y+10=(x+1)²+(y-3)²=0,则x=-1,y=3】
【全是用的完全平方式和平方差公式,把这两个公式给记住这类就都会了】
5a-1 2x+3 2b x的4方-1 -1-x b-a 8m方-1 x2方y2方-1 算了太累了
(5a+1)(5a-1)=25a²-1
(2x-3)(2x+3)=4x²-9
(-3a+ 2b)(-3a-2b )=9a²-4b²
(x-1)(x+1)(1+x²)=x^4-1
(x-1)(-1-x)=1-x²
(a+b)(b-a)=b²-a²
(2m+1)(4m...
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(5a+1)(5a-1)=25a²-1
(2x-3)(2x+3)=4x²-9
(-3a+ 2b)(-3a-2b )=9a²-4b²
(x-1)(x+1)(1+x²)=x^4-1
(x-1)(-1-x)=1-x²
(a+b)(b-a)=b²-a²
(2m+1)(4m-1)=8m^2+2m-1
(1-xy)(-xy-1)=x^2y^2-1
(-a-2b)²=a^2+4ab+4b^2
-4m(4m-1)和-12mn(m+n)²的公因式是-4m
(a-b)五次方-3(a-b)³的公因式是(a-b)^3
计算(-5/12)2007次方×(2又2/5)2006次方=-5/12
若a²+a+1=2,则(a-5)(6+a)=-29
如果(2a+2b+1)(2a+2b-1)=63,则a+b=16
x²-4x+(4 )=(x-2)²
( ay)^2+2ay+1=(ay+1)²
如果x²+mx-45=(x+n)(x+5),则m= -4,n=-9
因式分解x³-x=x(x+1)(x-1),t²y+xy²=y(t^2+xy)
如果x+y=10,xy=7,则x²y+xy²=70
若mx²-ny²=(x+3y)(x-3y),则m=1,n=9
若x²+y²+2x-6y+10=0,则x的Y次方=-1
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5a-1
2x+3
2b
x^4 - 1(x的四次方减1)
-x-1
-a+b
8m² + 2m -1
(xy)² - 1
a²+4ab+4b²
-4m
(a-b)³
-5/12
-29
+4或者-4
4 x-2
(ay)² ay+1
m= -4 n= -9
x(x+1)(x-1) y( t²+x)
70
m=1 n=9
-1
1.5a-1 2.2x+3 3.2b 4.x^2-1 5.-1-x 6.b-a 7.8m^2+2m-1 8.x^2y^2-1 9.a^2+4b^2+4ab 10.4m 11.(a-b)^3 12.-5/12 13.-29 14.4 15.4、x-2 16.ay、ay+1 17.m=-4、n=-9 18.x(x+1)(x+1) 19.y(t^2+xy) 20.70 21.m=1,n=9 22.-1
(5a+1)(5a-1 )=25a²-1
(2x-3)( 2x+3 )=4x²-9
(-3a+2b )(-3a-2b )=9a²-4b²
(x-1)(x+1)(1+x²)=(x^2-1)(1+x²)=x^4-1
(x-1)( -x-1)=1-x²
(a+b)(...
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(5a+1)(5a-1 )=25a²-1
(2x-3)( 2x+3 )=4x²-9
(-3a+2b )(-3a-2b )=9a²-4b²
(x-1)(x+1)(1+x²)=(x^2-1)(1+x²)=x^4-1
(x-1)( -x-1)=1-x²
(a+b)( b-a)=b²-a²
(2m+1)(4m-1)=8m^2+2m-1
(1-xy)(-xy-1)=(xy)^2-1
(-a-2b)²=a²+4b²+4ab
-4m(4m-1)和-12mn(m+n)²的公因式是m
(a-b)五次方-3(a-b)³的公因式是(a-b)
计算(-5/12)2007次方×(2又2/5)2006次方 -5/12
若a²+a+1=2,则(a-5)(6+a)=a²+a-30= -29
如果(2a+2b+1)(2a+2b-1)=63,则a+b=4 【七九63】
x²-4x+ ( 4 )=( x-2)²
( a²y² )+2ay+1=( ay+1 )²
如果x²+mx-45=(x+n)(x+5),则m= -4 n = -9
因式分解x³-x=x(x²-1)=x(x-1)(x+1) , t²y+xy²=y(t²+xy)
如果x+y=10,xy=7,则x²y+xy²=xy(x+y)=70
若mx²-ny²=(x+3y)(x-3y),则m= 1 n=9
若x²+y²+2x-6y+10=0,则x的Y次方= -1 【 x²+y²+2x-6y+10=(x+1)²+(y-3)²=0,则x=-1,y=3】
【全是用的完全平方式和平方差公式,把这两个公式给记住这类就都会了】
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