Subtract the following terms if possible 2 squareroot 17x 7

Subtract the following terms, if possible. 2 squareroot 17x - 7squareroot 17 x Select the correct choice below and, if necessary, fill in the answer box to complete your choice. 2-squareroot 178x - 7 squareroot 17 x = (Type an exact answer, using radicals as needed.) The radicals cannot be combined.

Solution

2 sqrt (17x ) - 7 sqrt (17x)

when the term inside radical sign is same we can subtract the outer numbers

so, 2 sqrt (17x ) - 7 sqrt (17x) = (2-7) sqrt (17x)

= - 5 sqrt (17x)