Question

find the difference of: 9sqrt 7 and sqrt 28

Answer 1

well first step wld be too simplify the second sqrt which is sqrt(28)

Answer 2

yep which is 2 sqrt 7

Answer 3

yes :)

Answer 4

See we can only subtract or add with sqrts if the inside of the sqrts both have the same number or like variable. Here they are both 7 so we can subtract them.
9sqrt(7)-2sqrt(7)
So we would only subtract the coefficeint in front of the sqrt and we wld just leave the sqrt
so what wld the answer be?

Answer 5

LOL the guy disappeared hehe

Answer 6

9sqrt(7)-2sqrt(7)=7sqrt(7)
Here is the answer if u ever reappear

Answer 7

yep ha I was doing the math lol yep. I got 7 sqrt 7 too:) thankyou very much!

Answer 8

np :)