exam Maths Puzzle Numerical Ability

3 2
12x -8x +4x

the 3 goes over the 12, the 2 over the 8

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exam Other Question

I need to know if this is correct. Factor completely

x^2 + 9x + 8 = (x+1)(x+8) together, lauren and aaoron sold 456 raffle tickets. lauren sold 24 more than aaoron. how many did lauren sell?