Question

Find equivalent polynomial equation of \(\sqrt{a^2-4ab+4b^2}\)

Answer 1

*expression

Answer 2

\[\sqrt{(a-2b)^2}\]\[\left| a-2b \right|\]

Answer 3

why use modulus value?

Answer 4

\[x^2=a \]\[x=\pm \sqrt{a}\]so instead of plus minus we write modulus!