A few days ago
Thomas

How do you work a problem like √20x – √45x?

My book doesn’t show a problem simular… I need to know how to work a problem like this. THX.

Top 2 Answers
A few days ago
Anonymous

Favorite Answer

First get it into something reducable by pulling out factors of the square root.

sqrt (2x2x5xX)- sqrt (3x3x5xX)

2 sqrt 5X – 3sqrt 5X

-sqrt 5X is the final answer

How’d you get that symbol off your keyboard? Neat trick!

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A few days ago
hplss.rmntc
If the radial is only over the 20 and 45 then it could also be said as:

(√20 – √45)x

(√4*5 – √9*5)x

(2√5 – 3√5) x

(-1√5)x

-√5 x

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