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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
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 (1*2+2*3)*(1/1*2+1/2*3)+(2*3+3*4)*(1/2*3+1/3*4)+0.|+(19*20+20*21)*(1/19*20+1/20*21) .
Question type: Mathematical calculation
Solution:
(1*2+2*3)*(1/1*2+1/2*3)+(2*3+3*4)*(1/2*3+1/3*4)+0.|+(19*20+20*21)*(1/19*20+1/20*21)
=8*(1/1*2+1/2*3)+(2*3+3*4)*(1/2*3+1/3*4)+0.+(19*20+20*21)*(1/19*20+1/20*21)
=8*3.5+(2*3+3*4)*(1/2*3+1/3*4)+0.+(19*20+20*21)*(1/19*20+1/20*21)
=8*3.5+18*(1/2*3+1/3*4)+0.+(19*20+20*21)*(1/19*20+1/20*21)
=8*3.5+18*2.833332+0.+(19*20+20*21)*(1/19*20+1/20*21)
=8*3.5+18*2.833332+0.+800*(1/19*20+1/20*21)
=8*3.5+18*2.833332+0.+800*2.10264
=28+18*2.833332+0+800*2.10264
=28+50.999976+0+800*2.10264
=28+50.999976+0+1682.112
=78.999976+0+1682.112
=78.999976+1682.112
=1761.111976
Answer:(1*2+2*3)*(1/1*2+1/2*3)+(2*3+3*4)*(1/2*3+1/3*4)+0.|+(19*20+20*21)*(1/19*20+1/20*21)=1761.111976