A 21 foot flagpole casts a shadow on a flat concrete patio. The distance from the top of the pole to the tip of the shadow is 23 feet.
What is the distance along the ground from the base of the pole to the
tip of the shadow (nearest tenth)?

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,