2(-5/2)^2-(-5/2)-15 - solution

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Solution for 2(-5/2)^2-(-5/2)-15 equation:

2*(-5/2)^2-(-5/2)-15 = 0

2*(5/2)^2-(-5/2)-15 = 0

2*25/4-(-5/2)-15 = 0

25/2-(-5/2)-15 = 0

5/2-15+25/2 = 0

15-15 = 0

0 = 0

L = P

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