Question

a+b=10 and ab=21 then find the value
ofa^3+b^3​

Answer 1

Answer:

a+b=10

ab=21

(a^3+b^3)

=(a+b)^3-3ab(a+b)

=(10)^3-3.21.10

=1000-630

=370

so, a^3+b^3=370