2 + 5 is 7 + 6 =13 + 7 = 20 + 8 = 28 + 9 = 37 + 10 is 47.
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.
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 = 78
8
28 / 7 + 2 * 3 = 4 + 6 = 10.
9 + 6 - 2 + 7 - 10 = -4
9 - 6 + 7 + (2 x 10) = 30
2 + 5 is 7 + 6 =13 + 7 = 20 + 8 = 28 + 9 = 37 + 10 is 47.
1+2+3+4+5+6+7+8+9+10=55
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55
144..
10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 + 0 = 55
10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 + 0 = 55
(10 + 1) x 10/2
-2 + (-6) + 7 = -1
2( 3 + 7 ) + 2(3) + (2)(7) 2(10) + 2(3) + (2)(7) 20 + 6 + 14 = 40
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.