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what is the solution sets of the following
a) 2x^2-7x-5
b) 5y^2-16y+3
c) 4y^2+5y-6
d) 10x^2-13x+4
e) 12y^2-11y-5
f) 10c^2-21c+9
g) 3m^2+5m-2
h) 12x^2+19x+5

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