Question

ax+ay+bx+by

ax+ay+2x+2y

ax+ay-bx-by

ax+ay-2x-2y

nhanh lên mình cần lắm

Answer 1

\(1,ax+ay+bx+by\)

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

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

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

\(2,ax+ay+2x+2y\)

\(=\left(ax+ay\right)+\left(2x+2y\right)\)

\(=a\left(x+y\right)+2\left(x+y\right)\)

\(=\left(x+y\right)\left(a+2\right)\)

\(3,ax+ay-bx-by\)

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

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

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

\(4,ax+ay-2x-2y\)

\(=\left(ax+ay\right)-\left(2x+2y\right)\)

\(=a\left(x+y\right)-2\left(x+y\right)\)

\(=\left(x+y\right)\left(a-2\right)\)

Answer 2

ax + ay + bx + by

= a.(x+y) + b.(x+y)

= (x+y).(a+b)

ax + ay + 2x + 2y

= a.(x+y) + 2.(x+y)

= (x+y).(a+2)

ax + ay - bx - by

= a.(x+y) - b.(x+y)

= (x+y).(a-b)

ax + ay - 2x - 2y

= a.(x+y) - 2.(x+y)

= (x+y).(a-2)