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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exam Other Question

In triangle RST, U lies of TS with TU:US = 2:3. M is the midpoint of RU. TM intersects RS in V. Find the ratio RV:RS. Wont someone please help me???

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