Factor the polynomials

Exercises

               

         1             x² +7x +12 =

                 x²  +3x +4x +12 =

                 x(x+3) +4(x+3) =

                 (x+3)(x+4)

2.            4x² – 25 =

               (2x -5)(2x + 5)

3.             x³ -64 =

                (x -4)(x² +4x+16)

4            x⁶ – 1=

             (x³ – 1)(x³ + 1) =

             (x – 1)(x² + x +1)((x + 1)(x² –x  +1)

5           25x² – 40xy +16y² =

             (5x – 4y)²