Question

if a+b=12 and ab=32 find the value of a^3+b^3​

Answer 1

Answer:

476

Step-by-step explanation:

a³+b³=(a+b)(a²-ab+b²)=(a+b){a²+b²-ab}=(a+b)[{(a+b)²-2ab}-ab]=12(144-96)=12(48)=476

Answer 2

Answer:

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

12^3=a^3+b^3+3(12)(32)

1728=x+1152

x=a^3+b^3=1728-1152

x=576