Question

How do I simplify this radical expression? I'm supposed to divide by rationalizing the denominator.

Answer 1

in short, you use 1, since any number is itself times 1, or whatever = whatever * 1


`\bf \cfrac{4}{√(50)}\iff \cfrac{4}{√(50)}\cdot 1\iff \cfrac{4}{√(50)}\cdot \cfrac{1}{1}\implies \cfrac{4}{√(50)}\cdot \cfrac{√(50)}{√(50)} \\\\\\ \cfrac{4√(50)}{√(50^2)}\implies \cfrac{4√(50)}{50}`