Question

C.

What is the solution to the equation1 over the square root of 8 = 4(m + 3)?

m = − 15 over 4
m = − 11 over 4
m = 5 over 4
m = 9 over 4

Answer 1

square both sides

Answer 2

\[\frac{ 1 }{ \sqrt{8} }=4(m+3)\] Does the equation look like that?

Answer 3

yes

Answer 4

Ok, then you need to square both sides, as @FaiqRaees said, and then what do you get?

Answer 5

how would i do that?

Answer 6

\[(\frac{ 1 }{ \sqrt{8} })^{2}=4(m+3)^{2}\]

Answer 7

That, in turn, gives you \[\frac{ 1 }{ 8 }=4(m+3)^{2}\]

Answer 8

What does \[(m+3)^{2}\] equal? Use the FOIL method.

Answer 9

2m+6 = 3/2

Answer 10

How did you get that answer? Do you know what the FOIL method is?

Answer 11

Can that be explained, plz? ;-;

Answer 12

\[m=\frac{1}{16} \left(\sqrt{2}-48\right) \]It appears that all of the answer options are incorrect.

Answer 13

Hmm.. interesting