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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?
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)
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 . 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)
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)
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 - a + 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 . ( a + b )
= ( x + y ) . ( a + b )
1) ab + ac
\(\Rightarrow a.\left(b+c\right)\)
2) ab - ac + ad
\(\Rightarrow a.\left(b-c+d\right)\)
3) ax - bx - cx + dx
\(\Rightarrow x.\left(a-b-c-d\right)\)
4) a(b + c) - d(b + c)
\(\Rightarrow\left(b+c\right).\left(a-d\right)\)
5) ac - ad + bc - bd
\(\Rightarrow a.\left(c-d\right)+b.\left(c-d\right)\)
\(\Rightarrow\left(c-d\right).\left(a+b\right)\)
6) ax + by + bx + ay
\(\Rightarrow ax+bx+ay+by\)
\(\Rightarrow x.\left(a+b\right)+y.\left(a+b\right)\)
\(\Rightarrow\left(a+b\right).\left(x+y\right)\)