$$2x^2+10x-8$$

$$2x^2-8x-8$$

$$2x^2+8x+8$$

$$2x^2+10x+8$$

$$x^2+5x=0$$

$$2x^2-2=0$$

$$2x-2x^2-9=0$$

$$5x-10=0$$

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a = 3, b = 2, c = 9

a = 3, b = -2, c = 9

a = 3, b = -2, c = -9

a = 3, b = 2, c = -9

a = 3, b = -2, c = 4

a = 3, b = 2, c = 4

a = 2, b = 3, c = 4

a = -2, b = 3, c = 4

a = 3, b = 4, c = 1

a = 1, b = 4, c = 1

a = 1, b = 4, c = -1

a = 3, b = 4, c = -1