Find `a` such that (x^2+2x)^2-3(x^2+2x)+a+2=0 has 2 real roots.
Akarsh , 6 Years ago
Grade 11
Algebra> Find `a` such that (x^2+2x)^2-3(x^2+2x)+a...
1 AnswersSimon
Last Activity: 6 Years ago
Let (x^2+2x)=bb^2-3b+(a+2)=0 and let this equation have 2 rootsD= 3^2-4(a+2)For roots to be real,9-4(a+2)>=0 1>=4aa
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