Determine the nature of the roots 2x^2+8x+3=0

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Percent increase and decrease. original number: 45 new number: 18

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.