ax-2x-a^2+a+2a
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29 tháng 7 2018
a) ax - 2x - a2 + 2a
= ( ax - 2x ) - ( a2 - 2a )
= x ( a - 2 ) - a ( a - 2 )
= ( a - 2 ) ( x - a )
b) x2 + x - ax - a
= ( x2 + x ) - ( ax + a )
= x ( x + 1 ) - a ( x + 1 )
= ( x + 1 ) ( x - a )
Hok Tốt!!!
29 tháng 7 2018
a) ax -2x- a2+ 2a
= (ax -2x ) -(a2 -2a )
= x(a-2) -a ( a-2 )
= (x-a) (a-2)
b) x2 +x -ax -a
=( x2 +x ) - ( ax +a )
= x( x+1 ) -a ( x+1 )
= ( x-a ) (x+ 1)
c) 2x2 +4ax +x +2a
=( 2x2 + 4ax ) + ( x+ 2a )
= 2x ( x+ 2a ) + ( x+2a )
= ( 2x +1 ) (x+2a )
d) 2xy -ax +x2 - 2ay
= (2xy -2ay ) + ( -ax + x2 )
= 2y( x-a ) + x ( x-a)
= ( 2y +x ) ( x -a )
6 tháng 8 2020
a/ \(ax-2x-a^2+2a\)
\(=x\left(a-2\right)-a\left(a-2\right)\)
\(=\left(x-a\right)\left(a-2\right)\)
Vậy....
b/ \(x^2+x-ax-a\)
\(=x\left(x+1\right)-a\left(x+1\right)\)
\(=\left(x+1\right)\left(x-a\right)\)
Vậy...
d/ \(2xy-ax+x^2-2ay\)
\(=2y\left(x-a\right)+x\left(x-a\right)\)
\(=\left(x-a\right)\left(2y+x\right)\)
e/ \(x^3+ax^2+x+a\)
\(=x^2\left(x+a\right)+\left(x+a\right)\)
\(=\left(x^2+1\right)\left(x+a\right)\)
Vậy...
27 tháng 8 2021
a: Ta có: \(ax-x+1=a^2\)
\(\Leftrightarrow x\left(a-1\right)=a^2-1\)
hay x=a+1
13 tháng 8 2018
a \(x\cdot\left(a-2\right)-a\left(a-2\right)\)
\(\left(x-a\right)\cdot\left(a-2\right)\)
b ,\(x\left(x+1\right)-a\left(x+1\right)\)
\(\left(x-a\right)\cdot\left(x+1\right)\)
c ,\(2x\left(x+2a\right)+x+2a\)
(2x+1)(x+2a)
d, 2xy+x^2-ax-2ay
x(2y+x)-a(x+2y)
(x-a)(x+2y)
e, x^2(x+a)+x+a
(x^2+1)(x+a)
f, y^2(y+x^2)+z(x^2+y)
(y^2+z)(y+x^2)
NN
3
4 tháng 7 2019
TL:
\(ax-2x-a^2+2a\)
\(=x\left(a-2\right)-a\left(a-2\right)\)
\(=\left(x-a\right)\left(a-2\right)\)
học tốt
4 tháng 7 2019
ax-2x-a2+2a
=ax -a2-2x +2a
=a(x-a)-2(x-a)
=(x-a)(a-2)
PM
3
NC
3 tháng 6 2021
\(ax-2x-a^2+2a\)
\(=\left(ax-2x\right)-\left(a^2-2a\right)\)
\(=x\left(a-2\right)-a\left(a-2\right)\)
\(=\left(a-2\right)\left(x-a\right)\)
29 tháng 7 2017
a)\(ax-2x-a^2+2a\)
\(=\left(ax-2x\right)-\left(a^2-2a\right)\)
\(=x\left(a-2\right)-a\left(a-2\right)\)
\(=\left(x-a\right)\left(a-2\right)\)
b)\(x^2+x-ax-a\)
\(=\left(x^2+x\right)-\left(ax+a\right)\)
\(=x\left(x+1\right)-a\left(x+1\right)\)
\(=\left(x-a\right)\left(x+1\right)\)
c)\(2x^2+4ax+x+2a\)
\(=\left(2x^2+4ax\right)+\left(x+2a\right)\)
\(=2x\left(x+2a\right)+\left(x+2a\right)\)
\(=\left(2x+1\right)\left(x+2a\right)\)
d)\(3x^2-3y^2-2\left(x-y\right)^2\)
\(=3\left(x^2-y^2\right)-2\left(x-y\right)^2\)
\(=3\left(x-y\right)\left(x+y\right)-2\left(x-y\right)^2\)
\(=\left(x-y\right)\left(3\left(x+y\right)-2\left(x-y\right)\right)\)
\(=\left(x-y\right)\left(3x+3y-2x+2y\right)\)
\(=\left(x-y\right)\left(x+5y\right)\)
\(ax-2x-a^2+a+2a\) \(=x\left(a-2\right)-a^2+3a\)