Question

viết dưới dạng tích các tổng sau

ab + ac

ab - ac + ad

ax - bx - cx + dx

 

Answer 1

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

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

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

Answer 2

a.(b+c)

a.(b-c+d)

x.(a-b-c+d)

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Answer 3

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

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

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

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Answer 4

1. a.(b+c)

2. a(.b-c+d) 

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

Answer 5

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

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

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