Equation is (x+2)^2 - x^2 = 7676
solve the equation by first opening the bracket of (x+2)^2 by A^2 + 2AB +C^2
you'll end up with 4x + 4 = 7672
thus x = 1918 and the next number is 1920.
I don't think it's possible to make any. A triangle has a sum total of 180 degrees, so, probably none.
This is right solution:
12^2+9^2=The third side^2
144+81=The third side^2
225=The third side^2
√225=The third side
15=The third side
Hope it helps....
Use slope formula: Y2-Y1/X2-X1 = 9 - (-3) / 4 - 0 = 12/4 = 3