exam Maths Puzzle Numerical Ability

Ching, Alex, Ellen and Ashley are playing in a local golf tournament. For the first two days of the tournament both of Ching's sores were under -2. Alex had scores under par, or z

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We are just starting Inverse matrices and I got it until I came to this problem. Will you show me how to solve it?


A^-1=matrix (2 2)
x+1, x+2
x+3, x+4
wat is the eequation simplied x^2-4x+2x-8? also wat is the x-intercept of the equation? also wat is the line of summary? also wat is the max/min point? thnk you bye