1 squared radical 40 is equal to 1 squared radical (4 x 10), and this become 2 squared radical 10. By adding 2 squared radical10 with 3 squared radical 10 we get 5 squared radical 10.
104
144.76.09
2 squared plus 2 x 3 = 10, 7 squared plus 7 x 2 = 63, 6 squared plus 6 x 5 = 66,8 squared plus 8 x 4 = 96 so 9 squared plus 9 x 7 = 81 + 63 = 144.
285
It is 16x squared plus 80x plus 100.Very complicated!
73
b= 10
It is 36/6 +4 = 10
16
When the sum of a number plus 3 is squared, it is 11 more than the sum of the number plus 2 when squared.
1 squared (1x1) +3=4