ax-by+4x-4y
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LK
25 tháng 7 2018
1. ac - ad + (c - d) = a(c - d) + (c - d) = (a + 1)(c - d)
2. ax + ay - x - y = a(x + y) - (x + y) = (a - 1)(x + y)
3. 4x + by + 4y + bx = 4(x + y) + b(x + y) = (b + 4)(x + y)
4. 1 - ax - x + a = a(1 - x) + (1 - x) = (a + 1)(1 - x)
25 tháng 7 2018
1. ac-ad +(c-d)
= a(c-d) +(c-d)
=(c-d) (a+1)
2. ax+ay-x-y
=(ax+ay)-(x+y)
= a(x+y)-(x+y)
=(x+y) (a-1)
3. 4x +by +4y+bx
=(4x+4y) +(bx+by)
=4(x+y) +b(x+y)
=(4+b) (x+y)
4.=(1+a)-(x+ax)
=(1+a)-x(1+a)
=(1+a)(1-x)
2T
4 tháng 9 2019
\(a.a\left(m-n\right)+m-n\)
\(=a\left(m-n\right)+\left(m-n\right)\)
\(=\left(a+1\right)\left(m-n\right)\)
\(b.ma+mb-a-b\)
\(=m\left(a+b\right)-\left(a+b\right)\)
\(=\left(m-1\right)\left(a+b\right)\)
\(c.4x+by+4y+bx\)
\(=\left(4x+4y\right)+\left(bx+by\right)\)
\(=4\left(x+y\right)+b\left(x+y\right)\)
\(=\left(b+4\right)\left(x+y\right)\)
\(d.1-ax-x+a\)
\(=\left(a-ax\right)+\left(1-x\right)\)
\(=a\left(1-x\right)+\left(1-x\right)\)
\(=\left(a+1\right)\left(1-x\right)\)
4 tháng 9 2019
1.a(m-n)+m-n=am-an+m-n=(am+m)-(an+n)=m(a+1)-n(a+1)=(a+1)(m-n)
2.ma+mb-a-b=(ma-a)+(mb-b)=a(m-1)+b(m-1)=(m-1)(a+b)
3.4x+by+4y+bx=(4x+bx)+(4y+by)=x(4+b)+y(4+b)=(4+b)(x+y)
4.1-ax-x+a=(1+a)-(ax+x)=(1+a)-x(a+1)=(1+a)(1-x)
HH
1
25 tháng 7 2021
a) \(4y^2-4x^2-4y+1\)
\(=\left(4y^2-4y+1\right)-4x^2\)
\(=\left(2y-1\right)^2-\left(2x\right)^2\)
\(=\left(2y-2x-1\right)\left(2y+2x-1\right)\)
11 tháng 9 2017
1,\(a\left(b+c\right)+3b+3c=a\left(b+c\right)+3\left(b+c\right)=\left(b+c\right)\left(a+3\right)\)
2,\(a\left(c-d\right)+\left(c-d\right)=\left(c-d\right)\left(a+1\right)\)
3,\(mx+my+5x+5y=m\left(x+y\right)+5\left(x+y\right)=\left(x+y\right)\left(m+5\right)\)
4,\(4x+by+4y+bx=4\left(x+y\right)+b\left(x+y\right)=\left(x+y\right)\left(4+b\right)\)
5,\(1-ax-x+a=\left(1-x\right)+a\left(1-x\right)=\left(1-x\right)\left(a+1\right)\)
HT
8 tháng 9 2020
a) \(A=5\left(x-y\right)+ax-ay=\left(a+5\right)\left(x-y\right)\)
b) \(B=a\left(x+y\right)-4x-4y=\left(x+y\right)\left(a-4\right)\)
c) \(C=xz+yz-5\left(x+y\right)=\left(x+y\right)\left(z-5\right)\)
d) \(D=a\left(x-y\right)+bx-by=\left(a+b\right)\left(x-y\right)\)
e) \(E=x\left(x+y\right)-5x-5y=\left(x-5\right)\left(x+y\right)\)
f) \(F=x^2-x-y^2-y=\left(x-y\right)\left(x+y\right)-\left(x+y\right)=\left(x+y\right)\left(x-y-1\right)\)
g) \(G=x^2-xy+x-y=x\left(x-y\right)+x-y=\left(x+1\right)\left(x-y\right)\)
XO
8 tháng 9 2020
A = 5(x - y) + ax - ay = 5(x - y) + a(x - y) = (a + 5)(x - y)
B = a(x + y) - 4x - 4y = a(x + y) - 4(x + y) = (a - 4)(x + y)
C = xz + yz - 5(x + y) = z(x + y) - 5(x + y) = (z - 5)(x + y)
D = a(x - y) + bx - by = a(x - y) + b(x - y) = (a + b)(x - y)
E = x(x + y) - 5x - 5y = x(x + y) - 5(x + y) = (x - 5)(x + y)
F = x2 - x - y2 - y = (x2 - y2) - (x + y) = (x2 - xy + xy - y2) - (x + y) = [x(x - y) + y(x - y)] - (x + y) = (x - y)(x + y) - (x + y) = (x + y)(x - y - 1)
G = x2 - xy + x - y = x(x - y) + (x - y) = (x + 1)(x - y)
ax - by + 4x - 4y
= (ax + 4x) - (by + 4y)
= x(a + 4) - y(b + 4)