sqrt((13^2-(3^2+4^2))/(2*18))

Question

The answer is 2, but how do you get it? Thank you

Answer 1

√(13²-(3²+4²))/(2 *18)

√(13²-(9 + 16)) / 36

√[(169-(25) / 36]

√[(169*36) -25 /36]

√ [(6084-25) / 36]

√ [6059 /36]

√[168.3]

approximately 13.

Comments

Solution

Answer 2

The expression is