How do you simplify #sqrt7-6sqrt7#?

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Answer 1 · 2017-05-19T09:57:45

#-5sqrt7#

Let #x=sqrt7#

#x-6x=-5x#

Substituting #sqrt7# will give us #-5sqrt7#

Answer 2 · 2017-05-19T10:10:39

#-5sqrt7#

Remember it is actually #1sqrt7 -6sqrt7#

There are two terms with a common factor of #sqrt7#

#1sqrt7 -6sqrt7#

#= sqrt7(1-6)#

#=-5sqrt7#

Or just treat it as adding like terms:

#1sqrt7 -6sqrt7 =-5sqrt7#