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x^3+10x^2+mx+n=0
Factors are (x+2) &(x-1)
x=-2
(-2)^3+10(-2)^2+m(-2)+n=0
-8+40+(-2m)+n=0
32-2m+n=0
-2m+n=32
m+n=-16
(according to the options given the answer is 7 and -18)
Factors are (x+2) &(x-1)
x=-2
(-2)^3+10(-2)^2+m(-2)+n=0
-8+40+(-2m)+n=0
32-2m+n=0
-2m+n=32
m+n=-16
(according to the options given the answer is 7 and -18)
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