Mysterious Person giups mik vs Mysterious Person
\(\frac{1}{2a-1}.\sqrt{25a^4-100a^5+100a^6}\)
= \(\frac{1}{2a-1}.\sqrt{25a^4\left(1-4a+4a^2\right)}\)
= \(\frac{1}{2a-1}.5a^2\sqrt{\left(1-2a\right)^2}\)
= \(\frac{5a^2}{2a-1}.\left(1-2a\right)\)
= \(-5a^2\)