Xsquared plus 2x squared plz show work i need to turn it in tomorrow

For each expression use a property to write an equivalent expression.

The frequency table shows a set of data collected by a doctor for adult patients who were diagnosed with a strain of influenza. patients with influenza age range number of sick patients 25 to 29 30 to 34 35 to 39 40 to 45 which dot plot could represent the same data as the frequency table? patients with flu

What is the area of the triangle 10 13 12