Question

2+2=5 how

dimaag lagao​

Answer 1

20 - 20 = 25-25

5*4 - 5*4 = 5*5 - 5*5

4(5-5) = 5(5-5)

(5-5) are cutting

4 = 5

then

2+2 = 5

Answer 2

Assume the equality given below.

$\displaystyle \frac{9x+4}{9x+5}=\frac{9x+5}{9x+4}$

Do cross multiplication.

$(9x+4)^2=(9x+5)^2$

Take the square root of both.

$9x+4=9x+5$

Now, cancel 9x from both sides.

$\begin{aligned}&4=5 \\ \\ \Longrightarrow\ \ &2+2=5\end{aligned}$

Hence Proved!

But there exists the actual value of x, and the correct method is given below.

$\displaystyle \frac{9x+4}{9x+5}=\frac{9x+5}{9x+4} \\ \\ \\ (9x+4)^2=(9x+5)^2 \\ \\ \\ \begin{aligned}^* 9x+4&=-(9x+5)\ \ \ &OR&&\ \ \ ^*-(9x+4)=9x+5\\ \\ 9x+4&=-9x-5&OR&&-9x-4=9x+5\end{aligned} \\ \\ \\ 9x+9x=-5-4 \\ \\ 18x=-9 \\ \\ x=\bold{-\frac{1}{2}}$

As an integer has positive and negative square roots having corresponding numerical value (or absolute value), when we take the square root in the method one side will be positive while the other side will be negative.

But I took the both as positive to get the contradiction mentioned in the question.