# What is the error in the proof? (proof in details)

##
100 = 100

10 (10) = (-10)(-10)

#sqrt((10(10)# = #sqrt((-10)(-10)#

10 = -10

100 = 100

10 (10) = (-10)(-10)

10 = -10

##### 1 Answer

Jul 24, 2018

Below

#### Explanation:

There is an error in the last line

In the third line

Remember that

Hence,

therefore, your fourth line should say