Question

subtract 10 radical 7 - 4 radical 7

A: 6 radical 14
B. 4 radical 14
C. 4 radical 7
D. 6 radical 7

Answer 1

To simplify \( 10\sqrt{7} - 4\sqrt{7} \), we combine like terms:

\[
10\sqrt{7} - 4\sqrt{7} = (10 - 4)\sqrt{7} = 6\sqrt{7}
\]

So the answer is \( 6\sqrt{7} \).

The correct choice is:

**D. 6 radical 7**