Can I get some help? Thanks!

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Answer 1 · 2017-09-17T17:07:49

See a solution process below

To expand the terms in the parenthesis multiply each term within the parenthesis by the term outside the parenthesis:

#color(red)(sqrt(7x))(sqrt(x) - 7sqrt(7)) =>#

#(color(red)(sqrt(7x)) * sqrt(x)) - (color(red)(sqrt(7x)) * 7sqrt(7)) =>#

#sqrt(7x * x) - 7sqrt(7x * 7) =>#

#sqrt(7x^2) - 7sqrt(49x) =>#

#sqrt(7 * x^2) - 7sqrt(49 * x) =>#

#(sqrt(7)sqrt(x^2)) - 7sqrt(49)sqrt(x) =>#

#xsqrt(7) - (7 * 7)sqrt(x) =>#

#xsqrt(7) - 49sqrt(x)#