Question

Viết dưới dạng tích các tổng sau : ab+ac ; ab -ac+ad; ax -bx-cx+dx; a(b+c) - d (b+c); ac-ad+bc-bd; ax+by+bx+ay

Answer 1

ab + ac = a(b + c)

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

ax - bx - cx + dx

=x(a - b - c + d)

 

Answer 2

chuẩn men

Answer 3

ab+ac=a(b+c)

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

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

Answer 4

ab+a(b+c)

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

Answer 5

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

Answer 6

ab + ac = a(b + c)

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

ax - bx - cx + dx

=x(a - b - c + d)