Question

Prove it 3+2=4. Do not tell wrong answer​

Answer 1

We can write,

-20 = -20 , right? Let's proof 3+2=5 !!

________________

$\sf{ - 20 = - 20}$

$\sf{ = > 16 - 36 = 25 - 45}$

$\sf{ = > {4}^{2} - (4 \times 9) = {5}^{2} - (5 \times 9)}$

$\sf{ = > 4 {}^{2} - (4 \times 9) + \frac{81}{4} = 5 {}^{2} - (5 \times 9) + \frac{81}{4} } \: \: \sf{ \blue{ \boxed{adding \: \frac{81}{4} \: in \: both \: sides}}}$

$\sf{ = > {4}^{2} - (2 \times 4 \times \frac{9}{2}) + ( \frac{9}{2} ) {}^{2} = 5 {}^{2} - (2 \times 5 \times \frac{9}{2} ) {}^{2} + ( \frac{9}{2} ) {}^{2} }$

$\sf{ = > (4 - \frac{9}{2} ) {}^{2} = (5 - \frac{9}{2} ) {}^{2} \: \: \sf{ \boxed{ \blue{(a - b) {}^{2} = {a}^{2} - 2ab + {b}^{2} }}}}$

$\sf{ = > 4 - \frac{9}{2} = 5 - \frac{9}{2} }$

$\sf{ = > 4 = 5 - \frac{9}{2} + \frac{9}{2} }$

$\sf{ = > 5 = 4}$

$\sf{ \orange{ = > 2 + 3 = 4}}$

Hence proved!!!