Simplify the expression

Question

-3√(x)-7, x = 121

Answer 1

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.