35x - 21
We note that '35' & '21' are both multiples of '7' ; (7 x 5 = 35 & 7 x 3 = 21).
So seven is factored out.
7(5x - 3)
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The answer depends on the form of the radical expression.
It is in its simplest form when all terms in the rational expression have a highest common factor of 1
The above expression cannot be expressed in an algebraic form.
It is in its simplified form.
w - 9 is in its simplest form.