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Analyze and solve. Show your solution. (2points each including the solution)
12. What should be added to 4x3 + 2x – 5 to have a sum of x3 – 3x + 2?




13. Take away 5x – 3 from the sum of -6x + 2 and x + 3





14. Find the perimeter of a rectangle if the length is 8y + 6 and the width is -2y +12. (3points)





15. The sum of two polynomials is 4x2 – 15x + 10. If one of them is 2x + 12, find the other polynomial.

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