exam Maths Puzzle Numerical Ability

Use the ac test to determine which of the following trinomials can be factored. Find the values of m and n for the trinomial that can be factored.

x squared - 3x + 7

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exam Other Question

Subtract. Simplify, if possible.
(2x+5)/(x^2+8x+15)-(x+2)/(x^2+8x+15) Train A leaves a station traveling at 40 mph. Eight hours later trian B leaves the same staion in the same direction at 60 mgh. How long does it take for train B to catch up to train A? Thanks so much for helping me.