Mathematical Trick

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Introduction: Mathematical Trick

There is a mathematical trick for those people who are most knows the math....     2+2=5

-20 = -20

Step 2:

Further we will add 20 1/4  to both members of equation

Step 3:

all know these mathematical formulas
1) a=4  b=9/2

2) a=5  b=9/2

Step 4:

all know these mathematical formulas

Step 5:

both parts are positive, it is possible to take a square root

Step 6:

as was to be shown

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Questions

in step 5, you are left with a positive or a negative result. This means that your answer is wrong and you should have checked it before posting this.

2 replies

see step 7 or video....
same focus mathematical !!!!

In this case, if the 4 part of the equation will be negative, so the answer will be 0.5 = -4 - -4.5 in order to satisfy the right side of the equation. This convention applies when the 5 part of the equation is negative -5 - -4.5 = -0.5. This means that the 4 part will equal -0.5 and is satisfied. When you square root, there has to be a negative and positive answer. You have to factor out -1 from the equation to eliminate ambiguity.

I hate to throw a wrench into your instructable, but in the step giving values to "a" and "b"; "a" was given two different values in the same equation 4 on one side and 5 on the other. Kudos on the attempt, but but a few more "confounding" intermediate steps will hide the "trick" better.