exam Maths Puzzle Numerical Ability

need help on factoring this polynominal 4s+6st-14st^2

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exam Other Question

Fm = qvBsin(theta)

solve for (v)

Can you divide Fm/qBsin(theta) to be left with just (v) on the right side? 6. A right triangle has perimeter 12 and sides x, (x + 1) and (x + 2). What is the area of
the triangle?
(figure not drawn to scale)
7. In the figure above, BD = DC, DE = EC, DE