Indices, SM-Bank 012 MC

\(30^2\) is equal to which of the following?

\(60^2÷3\)
\(3^2\times 2\times 5\times 2\times 5\)
\(9\times 5^2\)
\(3\times 10\times 10\)

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\(B\)

Show Worked Solution

\(30^2=900\)

\(\text{Checking Option B:}\)

\(3^2\times 2\times 5\times 2\times 5\)

\(= 3^2\times 10\times 10\)

\(=900\)

\(\Rightarrow B\)