Math question (curious)

[void_12]

Does anybody understand this?

topic is polynomials and cubic equations

[rummyxxxxx]

i learned this last semester give me a sec

[rummyxxxxx]

i can do this in a few hours because i have school in a bit but i can try to show a full length explanation if you want it

[rummyxxxxx]

here:
a=8
b=21
factored form is (x+2)(x+3)(x+3)
work:

[void_12]

good job my guy

[rummyxxxxx]

why do you ask if we know this problem

[void_12]

idk just curious