4 years ago

Hep me ASAP!!!! A.-2 B.4 C.7-3sqrt3 D.7- sqrt3

Mathematics

1 answer:

katen-ka-za [31]4 years ago

3 0

Answer:

7 - 3 $\sqrt{3}$

Step-by-step explanation:

Given

3 + $\sqrt{x+7}$ - $\sqrt{3x}$ ← substitute x = 9

= 3 + $\sqrt{16}$ - $\sqrt{27}$

= 3 + 4 - $\sqrt{9(3)}$

= 7 - 3 $\sqrt{3}$

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