Question

29) a+b=5 and a∙b=3 find a² +6²​

Answer 1

a + b = 5

a * b = 3

a^2 + b^2 = ?

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

a^2 + b^2 = (a + b)^2 - 2ab = 5^2 - 2 * 3 = 25 - 6 = 19

Answer: 19