ab + ac = a(b + c)

ab - ac + ad = a(b - c + d)

ax - bx - cx + dx

=x(a - b - c + d)

chuẩn men

ab+ac=a(b+c)

ab-ac+ad=a(b-c+d)

ax-bx-cx+dx=x(a-b-c+d)

ĐẶT NHÂN TỬ CHUNG NHA!

1) ab - ac + ad = a( b- c +d ) 

2) ax - bx - cx + dx = x( a-b-c+d)

3) a.( b + c ) - d . ( b + c )= (b+c)(a-d)

4) ac - ad + bc - bd = a( c-d)  + b( c-d) = (a+b)(c-d)

5) ax + by + bx + ay= a( x+y) + b( x+y) = (a+b)(x+y)

1) ab + ac = a(b + c)

2) ab - ac + ad = a(b - c + d)

3) ax - bx - cx + dx = x(a - b - c + d)

4) a(b + c) - d(b + c) = (b + c)(a - d)

5) ac - ad + bc - bd = a(c - d) + b(c - d) = (c - d)(a + b)

6) ax + by + bx + ay = (ax + ay) + (bx + by) = a(x + y) + b(x + y) = (x + y)(a + b)

ab + ac = a ( b + c )

ab - ac + ad = a ( b - c + d )

ax - bx - cx + dx = x ( a - b - c + d )

1/ab+ac=a(b+c)

2/ab-ac+ad=a(b-c)+ad=a(b-c+d)

3/ax-bx-cx+dx=x(a-b-c)+xd=x(a-b-c+d)

4/a(b+c)-d(b+c)=(ab+ac)-(bd+cd)=b(a+d)-c(a+d)=a+d(b+c)

5/ac-ad+bc-bd=a(c-d)+b(c-d)=c-d(a+b)

6/ax+by+bx+ay=a(x+y)+b(x+y)=x+y(a+b)

1/ ab+ac=a(b+c)

2/ab-ac+ad=a(b-c+d)

3/ax-bx-cx+dx=x(a-b-c+d)

4/a(b+c)-d(b+c)=(b+c)(a-d)

5/ac-ad+bc-bd=a(c-d)+b(c-d)=(c-d)(a+b)

6/ax+by+bx+ay=a(x+y)+b(y+x)=(y+x)(a+b)

\(1,ab+ac\)

\(=a\left(b+c\right)\)

\(2,ab-ac+ad\)

\(=a\left(b-c+d\right)\)

\(3,ax-bx-cx+dx\)

\(=x\left(a-b-c+d\right)\)

\(4,a\left(b+c\right)-d\left(b+c\right)\)

\(=\left(b+c\right)\left(a-d\right)\)

\(5,ac-ad+bc-bd\)

\(=a\left(c-d\right)+b\left(c-d\right)\)

\(=\left(a+b\right)\left(c-d\right)\)

\(6,ax+by+bx+ay\)

\(=\left(ax+bx\right)+\left(by+ay\right)\)

\(=x\left(a+b\right)+y\left(a+b\right)\)

\(=\left(x+y\right)\left(a+b\right)\)

1? 

a(b+c)

a(b-c+d)

x(a-b-c+d)

(b+c)(a-d)

(c-d)(a+b)

(x+-y)(a+b)

1 .  a(a+b)

2 .    a(b-c+d)

2   .  x(a-b-c+d)

4  (b+c)(a-d)

5   ac-d) + b(c-d)  = (c-d)(a+b)

6  x(a+b)+y(a+b)= (a+b)(x+y)

1/ a(b+c)

2/ a(b-c+d)

3/ x(a-b-c+d)

4/ (a-d)(b+c)

5/ (a+b)(c-d)

6/ (a+b)(x+y)

a) ab+ac=a(b+c)

b) ab-ac+ad=a(b-c+d)

c) ax-bx-cx+dx = x(a-b-c+d)

d) a(b+c)-d(b+c)= (b+c)(a-d)

e) ac-ad+bc-bd = a(c-d)+b(c-d)= (c-d)(a+b)

g) ax+by+bx+ay= x(a+b)+y(a+b)=(x+y)(a+b)

a,a.(b+c)

b,a.(b-c+d)

c,x.(a-b-c+d)

d,(a-d).(b+c)

...............

nhớ cho mk nha, mk làm đây, đừng cho ai khác nha, mk sẽ làm ngay bây giờ nhưng khi mk làm xong thì cho mk là đc

1)a(b+c)

2)a(b-c+d)

3)x(a-b-c+d)

4)(b+c)(a-d)

5)(c-d)(a+b)

6)(x+y)(a+b)