(x+1)(x+2)(x+3)(x+4)-24
=(x+1)(x+4)(x+2)(x+3)-24
=(x^2+5x+4)(x^2+5x+6)-24
=(x^2+5x+4)[(x^2+5x+4)+2]-24
=(x^2+5x+4)^2+2(x^2+5x+4)-24
=(x^2+5x+4+6)(x^2+5x+4-4)
=(x^2+5x+10)(x^2+5x)
=x(x^2+5x+10)(x+5)
(x+1)(*x+4)(x+2)(x+3)-24
=(x^2+5x+4)(x^2+5x+6)-24
=(x^2+5x+5)^2-1-24
=(x^2+5x+5)^2-25
=(x^2+5x+5-5)(x^2+5x+5+5)
=x(x+5)(x^2+5x+10)
(x+1)(*x+4)(x+2)(x+3)-24
=(x^2+5x+4)(x^2+5x+6)-24
=[(x^2+5x+5)-1][(x^2+5x+5)+1]-24
=(x^2+5x+5)^2-1-24
=(x^2+5x+5)^2-25
=(x^2+5x+5-5)(x^2+5x+5+5)
=x(x+5)(x^2+5x+10)
(x+1)(x+2)(x+3)(x+4)-24
=﹙x+1))(x+4)(x+2)(x+3)-24
=﹙x²+5x+4﹚﹙x²+5x+6﹚-24
=﹙x²+5x﹚²+10﹙x²+5x﹚
=﹙x²+5x﹚﹙x²+5x+10﹚
=x(x+5)(x ²+5x+10)
(x+1)(x+2)(x+3)(x+4)-24
=(x+1)(x+4)(x+2)(x+3)-24
=(x²+5x+4)(x²+5x+6)-24
=(x²+5x)²+10(x²+5x)+24-24
=(x²+5x)(x²+5x+10)
=x(x+5)(x ²+5x+10)