Answer:
e) x^2-17x+72 ...... multiply two binomials
f) 6x(x^3-2) ......... common factoring
g) (x+6)(x+2) .............factor a trinomial
h) x^2+12x+35 ...... multiply two binomials
i) (x+6)(x-6) ................difference of squares
Step-by-step explanation:
e)
(x-8)(x-9)
=x(x-9)-8(x-9)
=x^2-9x-8x+72
=x^2-17x+72 ...... multiply two binomials
f)
6x^4-12x
= 6(x^4 - 2x)
= 6x(x^3-2) ......... common factoring
g)
x^2+8x+12
= x^2+2x +6x+12
= x(x+2) + 6(x+2)
= (x+6)(x+2) .............factor a trinomial
h)
(x+7)(x+5)
=x^2+5x + 7x +35
= x^2+12x+35 ...... multiply two binomials
i)
x^2 - 36
= (x+6)(x-6) ................difference of squares