Simplify 2/√5
-2/√5
-√10
-√10/5
-2√5/5
quick backstory; i've been cheating on all of my work except portfolios this whole year cause i'm in online school. but i'm wanting to learn since there's gonna be ACT test in REAL so... please help me on how to do this!
I don't know the answer to your math problem. But thank you for being honest about your cheating.
I'm going to save your "backstory" without your name and post it every so often to remind other students of the disadvantages of cheating.
aw, that put a smile on my face.. yeaa I was always that person who didn't care about cheating until I received a message that there's going to be a full on 3 hour+ test in real life haha
To simplify the expression 2/√5, we need to rationalize the denominator, which means eliminating any radical from the denominator. Here's how you can do it step by step:
Step 1: Start with the expression 2/√5
Step 2: To rationalize the denominator, multiply both the numerator and the denominator by √5, the conjugate of √5. The conjugate of √5 is -√5 (since multiplying a number by its conjugate results in the difference of squares).
(2/√5) * (√5/-√5) = (2*√5)/(-√5*√5) = (2√5)/(-√25)
Step 3: Simplify the expression by simplifying the denominator.
(2√5)/(-√25) = (2√5)/(-5)
Step 4: Simplify further if necessary. In this case, we can cancel out a common factor of 5 from the numerator and denominator.
(2√5)/(-5) = (-2√5)/5
Therefore, the simplified expression of 2/√5 is -2√5/5.