Question

9 If ab = 8 and a + b = 6 then the value of (a square+ b square )
​

Answer 1

Answer:

a²+b²=20

Step-by-step explanation :

a+b=6

squaring on both sides

(a+b)²=6²

a²+2ab+b²=36

a²+b²=36-2(8)

a²+b²=36-16=20

Answer 2

Answer:

$(a + b {)}^{2} \\ {a}^{2} + {b}^{2} + 2ab \\ (6 {)}^{2} + 2(8) \\ 36 + 16 = 52$