Question
Which of the following is equivalent to $(2+3 \sqrt{5})(3+3 \sqrt{5}) ?$$$\begin{array}{llll}{\text { A. } 51} & {\text { B. } 6+9 \sqrt{5}} & {\text { C. } 6+24 \sqrt{5}} & {\text { D. } 51+15 \sqrt{5}}\end{array}$$
Step 1
This gives us $2 \times 3 = 6$ and $2 \times 3\sqrt{5} = 6\sqrt{5}$. Show more…
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