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Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x, y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis