Question

Question #569e1

Answer 1

`y=x^3-8x^2+4x+48`

Explanation:

`"expanding the factors"`

`"given "(x+a)(x+b)(x+c)" then expansion"`

`=x^3+(a+b+c)x^2+(ab+bc+ac)x+a.b.c`

`rArr(x-6)(x-4)(x+2)`

`=x^3+(-6-4+2)x^2+(24-8-12)x+(-6).(-4).2`

`=x^3-8x^2+4x+48larrcolor(red)"in standard form"`