exam Maths Puzzle Numerical Ability

can somebody please outline the steps involved from going from n^2-7n-8=0 to (n-8)(n+1)=0. Thank you

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How do you change slope intercept equation like y=-3/4x+3 into a standard equation? Jeb is allowed 2 hours less television time per week than his older brother.

a. Identify the dependent and independent variables.
b. Write a function rule to describe the numbe