5 squareroot 15x - 7 squareroot 15x
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. 515x -715x = blank (Please type an exact answer, using radicals as needed.)
B. The radicals cannot be combined.
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To subtract the terms \(5 \sqrt{15x} - 7 \sqrt{15x}\), we can combine them because they are like terms.
Here's the calculation:
\[ 5 \sqrt{15x} - 7 \sqrt{15x} = (5 - 7) \sqrt{15x} = -2 \sqrt{15x} \]
So the final answer is:
\[ -2 \sqrt{15x} \]
Therefore, the correct choice is:
A. \(5 \sqrt{15x} - 7 \sqrt{15x} = -2 \sqrt{15x}\)
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