Question

If a+b and ab = 12 , find value of a^2+b^2​

Answer 1

Answer:

(a+b)^2=a^2+b^2+2ab

(12)^2=a^2+b^2+2×12

144=a^2+b^2+24

144-24=a^2+b^2

120=a^2+b^2

Answer=12