Day: September 27, 2025

we can square both side like this: $ x^2= 2$ But I don’t understand why that it’s okay to square both sides. What I learned is that adding, subtracting, multiplying, or dividing both sides by the same thing is okay. For example: $ x = 1 $ $ x-1 = 1-1 $ $ x-1 = 0 $ $ x times 2 = 1 times 2 $ $ 2x = 2 $ like this. But how come squaring both …