exam Maths Puzzle Numerical Ability

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4(7x+10)=3(9x-5)+20

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university of phoenix elementary and intermediate algebra factor each trinominal by using the ac method 15x2 - 7x -2 I have already asked this ? BUT I cannot seem to get the same answer.
The midpoint of AB is (3sqrt5,2sqrt3). If the coordinates of endpoint B are (-sqrt5,1/2sqrt3), then what are