Will Fan And Medal <3 7. Simplify the radical expression. 2 square root 6 + 3 square root 96 A) 14 square root 6 B) 14 square root 96 C) 5 square root 96 D) 50 square root 6 8. Simplify the radical expression. (8 + square root 11)(8 – square root 11) A) 53 B) 75 + 16 sqrt 11 C) -57 D) 64 + sqrt 11 9. What is the domain of the function? Y = sqrt 4x+8 A) x > - 2 (> is underlined) B) x < - 2 (< is underlined) C) x > 2 (> is underlined) D) x < 2 (< is underlined)
for a test?
does it help to know that \(96=16\times 6\)?
@elvisiscool69 Practice questions.
the reason that is useful is because that means \[\sqrt{96}=\sqrt{16\times 6}=\sqrt{16}\times \sqrt6=4\sqrt6\]
@satellite73 Are you referring to question #7
making the first question \[2\sqrt6+3\times 4\sqrt6\]
yes, the one with the 96 in it
@satellite73 I got B
no
lets go slow
what is \(3\times 4\)?
lol don't let anyone bust your chops about a profile picture i am not really a bike either you can be anyone you like
12
ok so now we have \[2\sqrt6+12\sqrt6\] and we have to add
@MariahDimond no, i am a car
in fact, it am a 73 satellite (google it)
@satellite73 I'm not sure what else to do..
@Answers101 so what is 2 apples plus twelve apples?
14
14 whats?
sure did you google it? @Answers101 2 cars plus 12 cars is 14 whats?
So the answer is A
oui
?
yes
@satellite73 OK question 8 I got D... is that correct?
i will fix that http://www.polyvore.com/cute_emo_girls/thing?context_id=2740920&context_type=lookbook&id=70745872
no, D is wrong
\[(a+b)(a-b)=a^2-b^2\\ (8+\sqrt{11})(8-\sqrt{11})=8^2-11\]
@MariahDimond a picture of your picture
@satellite73 yay you found me :D
@satellite73 Is it A?
yes
@satellite73 9. What is the domain of the function? Y = sqrt 4x+8 A) x > - 2 (> is underlined) B) x < - 2 (< is underlined) C) x > 2 (> is underlined) D) x < 2 (< is underlined)
you cannot take the square root of a negative number set \[4x+8\geq 0\] and solve for \(x\) in two steps
@satellite73 I think the answer is C
nope
Join our real-time social learning platform and learn together with your friends!