Question

If a minus b is equal to 3 comma ab is equal to 10 find a square plus b square

Answer 1

a-b = 3
ab = 10
(a-b)² = a²+b²-2ab
(3)² = a²+b²-2(10)
9 = a²+b²-20
9+20 = a²+b²
=> a²+b² = 29

Answer 2

a-b=3
(a-b)square=9
a square+b square-2ab=9
a square+b square=9+2×10 (bcz ab=10)
29