Question 1140825
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They want you solve the equation


{{{(V+4)^2}}} - 49 = 0.


It is <U>VERY SIMPLE</U>.


First, move 49 from the left side of the equation to the right side, changing the sign. You will get


{{{(V+4)^2}}} = 49.


Next step, take square root of both sides.  Square root of 49 is  +/- 7, so you will get


    V + 4 = +/- 7.


Last step is to move "4" from the left side to the right side, changing its sign. You will get


    V = - 4 +/- 7.


Thus, you have two solutions  {{{V[1]}}} = - 4 + 7 = 3   and   {{{V[2]}}} = -4 - 7 = -11.     <U>ANSWER</U>


You may check the answer on your own by substituting the found values into the original equation.
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The given equation was <U>very simple</U> - therefore, the solution is simple, too.