What is \(\frac{5}{2}-\frac{4}{5}\left ( \frac{3}{2} \right )^{2}\)? When solving the problem I got \(\frac{7}{10}\), but my textbook says the answer is \(-\frac{1}{5}\). Where did I go wrong?
5/2 - (4/5)(3/2)^2 = [remember that we evaluate the exponent, first ]
5/2 - (4/5)(9/4) =
5/2 - [4/4][9/5] =
5/2 - [1] [9/5] =
5/2 - 9/5 common denominator = 10
25/10 - 18/10 =
7/10 .....definitely!!!
5/2 - 4/5*3/2^2 =
5/2 - 4/5*9/4 =
5/2 - 36/20 =
50/20 - 36/20 =14/20=7/10 The way you have written is certainly the answer that you got. Ckeck the question carefully.
