exam Maths Puzzle Numerical Ability

How would you solve this. I got 0 & -1 but they dont plug in the solution right.
5x^2-5x=0

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Simple Anova
Exercise 12.7

(a) Use Excel, MegaStaqt, or Minitab to calculate a matrix of correlation coefficients.
(b) Calculate the critical valu Factor by grouping: 6wy - 2xy + 9bw - 3bx