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Simplify the expression

0 votes
-3√(x)-7, x = 121
asked Nov 1, 2013 in ALGEBRA 1 by chrisgirl Apprentice

1 Answer

0 votes

Step 1

Simplify the expression 

-3√(x)-7

The expression is -3.√x-7
Suare Root of a Number :If   b2-a than b is a square root of a.

=3-.√121-7                         (Substitute x=121)

=3.11-7                               (The positive square root of 121 is 11)

Step 2
 
=33-7                                  (Multiply:-3.11=-3×11=-33)

=-40                                    (Subtract: -33-7=-40)

Answer 

The value of expression is -40.

answered Nov 1, 2013 by casacop Expert

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