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[" 28.If "(x+2)" and "(x-1)" are factors...

[" 28.If "(x+2)" and "(x-1)" are factors of the polynomial "p(x)=x^(3)+10x^(2)+mx+n],[" then "],[[" (a) "m=5,n=-3," (b) "m=7,n=-18],[" (c) "m=17,n=-8," (d) "m=23,n=-19]]

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