I need help solving this question x=.

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 .

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

How do you determine if an ordered pair is a solution to a given equation?