Question

what's the answer of this equation :
a³-a-120​

Answer 1

Answer:

Try setting the problem to 0:

a³-a-120=0

Then consider a=5

5³-5–120=125–5–120=0

0=0 √

If 5 works in this equation, then one of the factors must be a-5. Then:

a³-a-120/(a-5)=a²+5a+24 which can’t be factored further. So:

a³-a-120=(a-5)(a²+5a+24)……………..

Answer 2

Gopal...................................