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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?
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/ 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)
=(a-d)(b+c)
5/ ac - ad + bc - bd
=a(c-d)+b(c-d)
=(a+b)(c-d)
6/ ax + by + bx + ay
=x(a+b)+y(b+a)
=(x+y)(b+a)
A) ab + ac=a.(b+c)
B)ab - ac + ad=a.(b-c+d)
C) ã-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.(b+a)=(a+b).((x.y)
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)
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)
...............
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)
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)