Factor the common factor of 5x^2+5x

Answer question above and explain each step : )

Place the following steps in order to complete the square and solve the quadratic equation,

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .