factor please

Question

Factor. (Work not required to be shown).

(a) 2x^2-7x+3 

(b) 100-y^2

(c)8x^3-1

Answer 1

a) 

 

   2X^2 -7x + 6 =

 

    2X^2 - 4X - 3X +6=

 

     2X ( X -2) - 3 ( X -2) =

 

     ( 2X -3 ) ( X -2 ) 

 

   b)  100 - Y^2 = ( 10 + Y ) ( 10 - Y) 

 

    c ) 8 X^3 - 1 = ( 2X - 1) ( 4X^2 + 2X + 1)