Question

if a+b=7and ab=4and find the value of a²+b²​

Answer 1

Answer:

a²+b²

(a+b)²-2ab

7²-2×4

49-8

41

Answer 2

Step-by-step explanation:

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

given a + b=7 ,ab=4

(7)^2= a^2+b^2+ 2(4)

49=a^2+b^2 +8

41 = a^2+ b^2