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It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation 15*14-14*13+13*12-12*11+11*10-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1 .
Question type: Mathematical calculation
Solution:
15*14-14*13+13*12-12*11+11*10-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-14*13+13*12-12*11+11*10-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+13*12-12*11+11*10-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+156-12*11+11*10-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+156-132+11*10-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+156-132+110-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+156-132+110-90+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+156-132+110-90+72-8*7+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+156-132+110-90+72-56+7*6-6*5+5*4-4*3+3*2-2*1
=210-182+156-132+110-90+72-56+42-6*5+5*4-4*3+3*2-2*1
=210-182+156-132+110-90+72-56+42-30+5*4-4*3+3*2-2*1
=210-182+156-132+110-90+72-56+42-30+20-4*3+3*2-2*1
=210-182+156-132+110-90+72-56+42-30+20-12+3*2-2*1
=210-182+156-132+110-90+72-56+42-30+20-12+6-2*1
=210-182+156-132+110-90+72-56+42-30+20-12+6-2
=28+156-132+110-90+72-56+42-30+20-12+6-2
=184-132+110-90+72-56+42-30+20-12+6-2
=52+110-90+72-56+42-30+20-12+6-2
=162-90+72-56+42-30+20-12+6-2
=72+72-56+42-30+20-12+6-2
=144-56+42-30+20-12+6-2
=88+42-30+20-12+6-2
=130-30+20-12+6-2
=100+20-12+6-2
=120-12+6-2
=108+6-2
=114-2
=112
Answer:15*14-14*13+13*12-12*11+11*10-10*9+9*8-8*7+7*6-6*5+5*4-4*3+3*2-2*1=112