Question

PLEASE HELP ME!!! THIS IS URGENT!!!! Solve (26*25)-(25*24)+(24*23)-(23*22)+(22*21)-(21*20)+(20*19)-(19*18)+(18*17)-(17*16)+(16*15)-(15*14)= Please simplify each parenthesis.

Answer 1

`240`

Explanation:

`\left(26\cdot 25\right)-\left(25\cdot 24\right)+\left(24\cdot 23\right)-\left(23\cdot 22\right)+\left(22\cdot 21\right)-\left(21\cdot 20\right)+\left(20\cdot 19\right)-\left(19\cdot 18\right)+\left(18\cdot 17\right)-\left(17\cdot 16\right)+\left(16\cdot 15\right)-\left(15\cdot 14\right)`

`650-600+552-506+462-420+380-342+306-272+240-210`

`=240`

Answer 2

240

Explanation: