solve the following equation :
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3×874 = 3×2×19×23 = 57×46
3x²-11x-874 = 0
3x²-57x+46x-874=0
3x(x-19)+46(x-19)=0
(3x+46)+(x-19)=0
x=-46/3 or x=19
3x²-11x-874 = 0
3x²-57x+46x-874=0
3x(x-19)+46(x-19)=0
(3x+46)+(x-19)=0
x=-46/3 or x=19
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it's a quadratic formula
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