Twice The Square Of The Sum Of A Number And 3 Is 98. Lets call the number x A number squared x2 Three less than twice the number 2x-3 The sum. The difference between consecutive triangles increases by 1.
Lets first translate that into the language. Or 2x2 x - 36 0. What is the number.
Let x be the missing number.
The sum of a number and twice its square is 36. A formula for the triangular numbers. For example n 4 in the last sum above To see that look at this oblong number in which the base is one more than the height. Found 3 solutions by stanbon josgarithmetic Boreal.
