Question

PLZ HELP!!!

Answer 1

@aum help

Answer 2

@thomaster @phi @myininaya plz help me

Answer 3

@jdoe0001 @cwrw238 @Luigi0210 @lacrosseplayer22 help me PLEZ

Answer 4

Just distribute and simplify.
a * (b + c) = ab + ac

Answer 5

but i dont get radicals at all

Answer 6

the equation doesn't make sense to me. trust me I would help. mail me and ill try

Answer 7

well.. what did you get for \(\bf \sqrt{2}(3\sqrt{2}+\sqrt{18})?\)

Answer 8

i dont know

Answer 9

hmm have you covered square root adding yet? and maybe multiplication?

Answer 10

yes, but i didnt understand :(

Answer 11

If it would help try writing \(\Large \sqrt{2}\) as \(\Large 2^{\frac 12}\)

Answer 12

hmm... say for example... any idea on what \(\bf \sqrt{2}\times \sqrt{2}=?\)

Answer 13

\[\sqrt{4} ...?\]

Answer 14

yeap \(\bf \sqrt{2}\times \sqrt{2}=\sqrt{2\cdot 2}\implies \sqrt{4}\implies \sqrt{2^2}\implies 2\)

Answer 15

so the answer is 2...?

Answer 16

thus \(\bf \sqrt{2}(3\sqrt{2}+\sqrt{18})
\\ \quad \\
{\color{brown}{ 18\to 2\cdot 3\cdot 3\to 2\cdot 3^2}}\qquad thus
\\ \quad \\
\sqrt{2}(3\sqrt{2}+\sqrt{{\color{brown}{ 18}}})\implies \sqrt{2}(3\sqrt{2}+\sqrt{{\color{brown}{ 2\cdot 3^2}}})\implies \sqrt{2}({\color{blue}{ 3}}\sqrt{2}+{\color{blue}{ 3}}\sqrt{ 2})
\\ \quad \\
\sqrt{2}({\color{blue}{ 6}}\sqrt{2})\implies ?\)

Answer 17

\[6\sqrt{4}...?\]

Answer 18

yeap which is \(\bf \sqrt{2}({\color{blue}{ 6}}\sqrt{2})\implies 6\sqrt{4}\implies 6\sqrt{2^2}\implies 6\cdot 2\)

Answer 19

so 12?

Answer 20

yeap

Answer 21

so the answer is 12?

Answer 22

so it is rational and equal to 12, which is answer choice C?

Answer 23

yes, notice the factoring of the 18 combines with the other term
then the factors left, combine to 12

Answer 24

ok thank you

Answer 25

well.. 12 is a rational number yes, that is, you can express it as a "ration" or fraction 12/1