quadratic equation but in terms of 5

We will solve sqrt(5-x)=5-x^2 but we will square both sides first! We will get a very nice quadratic equation in terms of 5 and then we will use the quadratic formula to solve it. This is a very fun math olympiad type of equation for algebra 2 and precalculus students! Special thanks to dear Cirnobyl for this impressive solution! Who would have thought to write that equation in terms of "5"?! That video from 2018, Dear Tejas: 👉   • Dear Tejas, challenge ACCOMPLISHED! (...  

See other people's takes on the same problem
by Mu Prime Math: 👉    • Square Root Problem: Solving the Quar...  
by Syber Maths: 👉    • Solving a radical equation. A video r...  
We can also solve the quadratic equation x^2-5x+4=0 in a similar way:
👉   • Quadratic Equation in "1"  

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