exam Maths Puzzle Numerical Ability

x x 3 = 2
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5

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exam Other Question
A balloon is secured to rope that is staked to the ground. A breeze blows the balloon so that the rope is taut while the balloon is directly above a flag pole that is 20 feet from please help solve

factor by grouping

4+xy-2y-2x

i am not sure how you know how to pair them up