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Find the complex zeros of function -x^5+2x^4-7x^3-10x+20=0? The base of an isosceles triangle is a=24cm side b=20cm find radius r and R (circumscribed and inscribed circle)? Please what time is my appointment on Tuesday 30/05/17. Thanks? Find the area of an isosceles triangle ABC with base a,side b, angle at base α and angle at the top γ b=8dm γ=55' area=? Find the value of the constant d given that integrate between 1 and 3 the function (x^2-6x+d )dx=3,?