Question

Сократите дробь: 1)x^2+3x________3a+ax2)   b^2___________b^2+bc3)  2a+4_________a^2-44) x^2-y^2__________x^2-xy

Answer 1

1)  x(x+3)  = x 
    a(3+x)    a
2)   b²    =  b  
  b(b+c)   b+c
3) 2(a+2)  =   2  
(a+2)(a-2)   a-2
4)   (x+y)(x-y) = x+y 
       x(x-y)         x 

Answer 2

1. (x(x+3))/(a(x+3)) = x/a

2. b^2/(b^2+bc) = b/(b+c)

3. 2(a+2)/(a-4) = -2/(a-4)

4. (x+y)(x-y)/(x(x-y)) = (x+y)/x = 1 + y/x