Question

Разложить многочлен на множители 1) 3m-3mn 2) 8x^3-12x^6 3) 64+16y+y^2 4) 49- \\frac{с^2}{9}    

Answer 1

1.3m(1-n)

2. 4x^3(2-3x^3)

3.(8+y)^2

4. 49 - c^2        7^2 - c^2      7^2 - c^2      1     

   -------------   = --------------  = -------------  : -----  = (7^2 - c^2) * 9 =49*2 - 9c^2= 12^2 - (3c)^2 =  

        9                  9              1              9 

= (12-3c)(12+3c)

 

Вроде так))))))

Answer 2

1) 3m-3mn = 3m(1-n)
2) 8x^3-12x^6 = 4x^3(2-3x^3)
3) 64+16y+y^2 = (8+y)^2
4) 49-с^2/9 = (7+с/3)(7-с/3)