Multiply and simplify if possible.
√7x (√x − 7√7)
Is all of "7x" under the first radical, or just the " 7?"
Just 7
√[7] x (√x − 7√7) =
x√[7x] - √[7] x * 7√7 =
x √[7x] - 7x √ [ 7 * 7 ] =
x √[7x] - 7x √ 49 =
x √[7x] - 7*7x =
x√[7x] - 49x =
x [ √[7x] - 49 ]
