Question

square root of 28- the square root of 112 +3 square root 63

Answer 1

hint:
\[\sqrt 28 \implies \sqrt{4 \times 7} \implies 2 \sqrt 7\]
\[\sqrt{112} \implies \sqrt{16 \times 7} \implies 4\sqrt 7\]
\[\sqrt{63} \implies \sqrt{9 \times 7} \implies 3\sqrt 7\]
does that help?

Answer 2

yea... somehow i got 7 root 7

Answer 3

nope.

what is the value of \[2\sqrt 7 - 4\sqrt 7 + 3\sqrt 7\]

Answer 4

is it just root 7

Answer 5

yes

Answer 6

ok...but does that include the 3 before the root 63?

Answer 7

what do you mean?

Answer 8

oh wait.. i did not see that o.O

Answer 9

sorry \(7\sqrt 7\) is right then

Answer 10

the problem is root 28 - root 112 + 3 root 63

Answer 11

are you serious?

Answer 12

well thanks for the explanation, it helped!!!!