You're given two side lengths of 6 centimeters and 9 centimeters. which measurement can you use for the length of the third side to construct a valid triangle?

Let x cm be the length of the third side.by triangle inequality,x+6> 9, 6+9> x, and 9+x> 6hence, the range of x is3< x< 15

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,