PLEASE HELP! (Sorry about pic quality)
Factor the following trinomial. x^2-15x+56

Step 1: The trinomial factors as x^+bx+c=(x+p)(x+q), where p+q=b and p*q=c. Fill in the following table with all of the possible values of p and q, using the fact that their product is the constant term, c=56

Step 2: Which factors for p and q add to equal the coefficient of the term x-term (-15) in the trinomial.

Step 3: Using the factors from Step 2, write the trinomial x^2-15x+56 in the factored form.

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.